One room feels comfortable while another is noticeably warmer, even though they share the same thermostat. Your HVAC system may run longer than usual, or airflow from certain vents may have weakened over time. These problems can have several causes, but leaking ductwork is one possibility worth considering. Because much of the duct system is hidden from view, leaks can go unnoticed for years. Here are five signs that may indicate your ductwork needs professional attention.

Why Duct Leaks Can Be Hard to Spot

Most residential ductwork runs through areas homeowners rarely see, including attics, crawl spaces, ceilings, and walls. A loose connection, damaged section, or gap around a joint can develop without creating an obvious problem in the living space.

Instead, homeowners may first notice changes in comfort or HVAC performance. Certain rooms may receive less airflow, the system may seem to run longer, or exposed ductwork may show visible damage.

The challenge is that none of these symptoms confirms a duct leak on its own. HVAC equipment, insulation, the thermostat, airflow, or home layout can cause similar symptoms. A professional ductwork inspection can help determine whether leakage is actually contributing to the problem.

5 Signs You May Have Leaking Ductwork

Leaking ducts can affect homes in different ways, depending on where the damage is located and how much air escapes. These five signs may indicate it is time to have the duct system evaluated.

1. Uneven Temperatures Between Rooms

If certain rooms consistently feel warmer or cooler than others, the ductwork serving those areas may not be delivering enough conditioned air.

A leak along the duct run can allow air to escape before it reaches the vent. However, uneven temperatures can also result from duct sizing, blocked vents, insulation, sun exposure, equipment performance, or differences in the heating and cooling needs of individual rooms.

Signs to watch for include:

• One bedroom that never reaches the same temperature as nearby rooms
• Upstairs spaces that are consistently difficult to cool
• Noticeably weaker airflow from certain vents
• Rooms that take much longer to become comfortable

If the same areas remain uncomfortable regardless of thermostat adjustments, checking the ductwork may be a good next step.

2. Energy Bills Increase Without an Obvious Reason

A change in heating or cooling costs can sometimes point to an efficiency problem somewhere in the HVAC system.

When supply ducts leak into an attic, crawl space, or another unconditioned area, some of the air the system has already heated or cooled may never reach the living space. The equipment may then run longer while trying to reach the thermostat setting.

Duct leakage is only one possible cause of higher utility bills. Weather, energy rates, thermostat settings, equipment condition, insulation, and household usage can all affect monthly costs. If energy use rises unexpectedly alongside comfort or airflow problems, it may be worth having the duct system inspected.

3. You Can See Damaged or Disconnected Ductwork

Visible damage is one of the clearer reasons to have ductwork professionally evaluated.

If part of the duct system is accessible in an attic, basement, or crawl space, you may notice:

• Loose or disconnected sections
• Crushed or badly kinked flexible ductwork
• Gaps around visible joints or connections
• Damaged exterior duct material
• Sealant or approved duct tape pulling away from a seam

Not every dent or imperfection affects system performance, but obvious separation or damage can disrupt airflow and let conditioned air escape.

Avoid crawling into tight or unsafe areas just to inspect the ducts. A technician can evaluate sections that are difficult or unsafe for homeowners to access.

4. Your Home Seems Dustier Than Usual

An unusually dusty home can have many causes, including filtration, household activity, pets, outdoor conditions, and gaps around doors or windows. In some cases, duct leakage can also contribute.

Depending on where the leak is located and the pressure within the duct system, openings may allow air from an attic, crawl space, or another surrounding area to enter the ductwork. That air can contain dust or other particles, which the HVAC system then distributes.

Duct sealing is not a cure for every indoor air quality problem, but checking for leaks may make sense when excess dust appears alongside airflow or comfort concerns.

5. You Hear New Whistling or Rattling Sounds

HVAC systems naturally make some noise while operating, but new sounds can indicate that something has changed.

Whistling can sometimes occur when air moves through a small opening or restriction. Rattling may come from a loose duct connection or another component vibrating while the blower is running.

These sounds do not automatically mean the ducts are leaking. Dirty filters, closed vents, blower problems, loose equipment panels, and other HVAC issues can produce similar noises. If a sound is new or getting worse, a professional inspection can help identify its source.

What Happens If Leaking Ductwork Is Left Unaddressed?

A duct leak may not get dramatically worse overnight, but leaving damaged or disconnected ductwork unaddressed can continue to affect airflow and system performance.

Conditioned air may keep escaping into areas where it provides no benefit, while rooms served by the affected ducts may remain difficult to heat or cool. Depending on the leak’s location, outside air may also enter the duct system.

The sooner you identify the source of an airflow or comfort problem, the sooner you can determine whether the solution involves duct sealing, duct repair, or another part of the HVAC system.

Have Your Ductwork Checked by Dugan Air

Uneven temperatures, weak airflow, rising energy use, or visible duct damage can all be reasons to take a closer look at your HVAC system. The key is determining whether leaking ductwork is causing the problem, rather than assuming it based on symptoms alone.

Dugan Air Heating & Cooling can inspect your duct system and recommend the appropriate next step based on what we find. Schedule an appointment to have your ductwork evaluated and find out whether leaks or other airflow problems are affecting comfort in your home.

You lower the thermostat, but one room still feels warmer than the rest of the house. Meanwhile, the AC runs longer than usual, and your energy bills keep creeping up. The problem may not be the equipment itself. Leaks in your ductwork can allow conditioned air to escape before it reaches the rooms that need it. An air duct sealing service can address those gaps, improve airflow, and help your HVAC system deliver heated and cooled air more effectively throughout your home.

How Leaky Ductwork Affects Comfort and Efficiency

Your duct system carries heated and cooled air from the HVAC equipment to rooms throughout the home. When connections loosen, seams develop gaps, or ductwork becomes damaged, some conditioned air can escape before reaching the vents.

Leaks can be especially noticeable when ductwork runs through unconditioned areas such as an attic, crawlspace, or garage. Instead of delivering all conditioned air into the living space, some may be lost along the way.

That does not necessarily mean the HVAC equipment itself is failing. In some homes, improving the duct system can help address comfort and efficiency problems without replacing otherwise functional heating or cooling equipment.

5 Benefits of an Air Duct Sealing Service

Professional duct sealing focuses on finding and sealing openings that let conditioned air escape or unwanted air enter the duct system. When leakage is contributing to comfort or performance problems, sealing those gaps can make a noticeable difference.

1. Reduce Conditioned Air Loss

Every leak in the supply ductwork creates another opportunity for heated or cooled air to escape before reaching the living space. The HVAC system has already used energy to condition that air, so losing it in an attic or crawlspace means some of that work never benefits the rooms inside the home.

Professional duct sealing addresses accessible gaps, joints, and connections using materials designed for HVAC ductwork. By reducing leakage, more of the air the system produces can reach its intended destination.

Improvements vary from home to home, but reducing unnecessary air loss can help the HVAC system deliver conditioned air more effectively.

2. Improve Uneven Temperatures

A bedroom that stays warmer than the rest of the house does not automatically mean the AC is too small. Uneven temperatures can have several causes, including airflow restrictions, duct design, insulation, sun exposure, and duct leakage.

If conditioned air escapes along the route to a particular room, less air may reach that space. That can leave some areas uncomfortable even while rooms closer to the HVAC equipment feel fine.

Sealing leaks may improve airflow distribution when duct leakage contributes to the problem. A professional evaluation matters because sealing alone won’t fix every cause of uneven temperatures.

3. Help the HVAC System Operate More Effectively

When the home does not reach the thermostat setting as expected, the heating or cooling system may run longer to maintain comfort. Leaky ductwork can contribute to that additional runtime.

Reducing unnecessary air loss can help the system deliver conditioned air more effectively throughout the home. That may reduce the need for the equipment to compensate for air that never reaches the living space.

Unusually long run times can also point to equipment, thermostat, insulation, refrigerant, or airflow problems. A duct inspection can help determine whether leakage is actually part of the issue.

4. Reduce Air Infiltration From Unconditioned Spaces

Duct leaks can involve more than conditioned air escaping. Depending on where a leak is located and how the duct system operates, openings can also let air from surrounding areas into the system.

If ductwork runs through an attic or crawlspace, that air may contain dust or other particles from the surrounding space. Sealing accessible leaks can help reduce unwanted air infiltration and keep the HVAC system more isolated from those areas.

Duct sealing isn’t a solution for every indoor air quality concern, but it can help improve overall HVAC performance.

5. Correct Hidden Ductwork Problems

Ductwork problems are easy to overlook because much of the system is hidden behind walls, above ceilings, or beneath the home. Homeowners may notice changes in comfort or airflow long before they realize the ducts themselves are involved.

Possible signs of duct problems include:

• Uneven temperatures between rooms
• Weak airflow from certain vents
• HVAC equipment that seems to run longer than expected
• Noticeable gaps or disconnected sections in accessible ductwork
• Whistling or other airflow-related noises
• Increasing difficulty keeping the home comfortable

These symptoms do not confirm a duct leak on their own. An HVAC technician can inspect the system and determine whether duct sealing, duct repair, or another service is appropriate.

What Happens During an Air Duct Sealing Service?

Professional duct sealing begins with an evaluation of the duct system to identify areas where air may be escaping. Technicians then address accessible connections, seams, fittings, and damaged areas using materials designed for HVAC ductwork.

This is different from simply covering a visible opening with ordinary household tape. HVAC ductwork requires sealing materials that can withstand the temperatures and operating conditions inside the system.

The exact process depends on the ductwork type, its location, and the extent of the leakage. In some cases, sealing existing ducts may be enough. Severely damaged, crushed, disconnected, or deteriorated sections may require repair or replacement instead.

Schedule an Air Duct Sealing Service With Dugan Air

If certain rooms never feel comfortable, your HVAC system runs longer than expected, or you suspect conditioned air is escaping through the ductwork, Dugan Air Heating & Cooling can help determine what is happening.

Our team can inspect your duct system and recommend sealing or repairs based on its actual condition. Schedule an appointment with Dugan Air to find out whether leaky ductwork may be contributing to comfort or efficiency problems in your home.

Indiana’s summers bring stretches of heat paired with heavy humidity, and that combination can make a home feel uncomfortable even when the air conditioner is running nearly nonstop. A whole-house dehumidifier addresses excess moisture directly, working alongside your HVAC system rather than replacing it.

Before deciding whether one is right for your home, it’s worth weighing the real advantages against the trade-offs, since a whole-house system isn’t the right fit for every household.

Why Whole Home Humidity Control Matters

Unlike a portable unit that treats a single room, a whole-house dehumidifier connects directly to your HVAC system’s ductwork, pulling excess moisture from the air as it circulates through the home. Because it works with equipment you already have, it doesn’t take up floor space or require the frequent emptying that portable units are known for.

Air conditioners remove some humidity as a byproduct of cooling, but they aren’t designed to be a home’s primary dehumidifier, especially during Indiana’s most humid stretches. When a dedicated system handles moisture removal instead, comfort improves throughout the entire house rather than in just one room, and the AC doesn’t have to work as hard to reach the same temperature.

The Advantages of a Whole House Dehumidifier

A properly sized whole house system offers several real advantages over portable alternatives, and most of them compound the longer the system runs.

1. Consistent Humidity Control Throughout the Home

A whole-house system keeps moisture levels balanced from room to room, rather than treating only the space the unit is in. That matters most in homes where certain areas, like a finished basement or a room over the garage, tend to run more humid than the rest of the house.

2. A More Comfortable Living Space

Lower humidity makes a home feel noticeably cooler at the same thermostat setting, often allowing homeowners to raise the temperature by a degree or two without sacrificing comfort. Over the course of a full summer, that adds up to a home that simply feels better to be in.

3. Less Strain on Your Air Conditioner

When a dedicated system handles moisture removal, the AC doesn’t have to work as hard to reach the same comfort level, which can mean fewer long run cycles during the most humid stretches of summer.

4. Fewer Triggers for Allergies and Mold

Mold, dust mites, and mildew all thrive in humid conditions, and bringing indoor humidity down to a more moderate range makes it harder for any of them to take hold. Homeowners who deal with seasonal allergy symptoms often notice a real difference once humidity stays consistently in check.

5. Long-Term Protection for Your Home

Excess moisture doesn’t just affect comfort. Over time, it can warp wood flooring, damage furniture, and contribute to musty odors that are difficult to fully eliminate. Keeping humidity in a healthy range helps protect the materials throughout the house, not just the people living in it.

The Tradeoffs to Consider

A whole-house system isn’t the right fit for every home, and it’s worth understanding the trade-offs before committing to one.

1. Higher Upfront Cost

A whole-house dehumidifier costs more to install than a portable unit, both for the equipment itself and for the labor involved in tying it into your existing ductwork and electrical system. It’s a bigger investment upfront, even if it tends to pay off in convenience over time.

2. Professional Installation and Ongoing Maintenance

Because the unit connects to your ductwork and electrical system, this isn’t a project a homeowner can tackle alone, and getting it installed correctly affects how well it performs. Like any HVAC component, it also needs periodic attention afterward, including filter changes and an occasional check of the drain line.

3. Not Every Home Needs One

Homes that already stay comfortable and dry, particularly newer, well-sealed construction, may not see enough of a difference to justify the investment. A whole-house system tends to make the most sense for homes with a documented, ongoing humidity problem rather than for occasional muggy days.

Signs Your Home Could Benefit From One

A few patterns tend to show up in homes that would benefit most from a whole-house system.

• Lingering smells: Musty odors that persist even with regular cleaning
• Excess moisture: Visible condensation on windows or other cool surfaces
• Persistent allergies: Allergy symptoms that noticeably improve when you’re away from home
• An overworked portable unit: A portable dehumidifier that needs constant emptying

If several of these sound familiar, a whole house system likely offers more complete relief than portable units alone.

Weighing the Decision

A whole house dehumidifier isn’t a fix for every home, but for households dealing with persistent humidity, allergy flare-ups, or a portable unit that can’t keep up, it often solves a comfort problem that the air conditioner alone never quite could. The upfront cost and installation requirements are real considerations, but for the right home they tend to be outweighed by steadier comfort, less strain on the AC, and better protection for the house itself over time. The honest answer for most homeowners comes down to how often and how severely humidity has already caused a problem.

If humidity is making your Indiana home feel uncomfortable, no matter how often your AC runs, Dugan Air Heating & Cooling can help you weigh whether a whole-house dehumidifier is the right fit. Contact us today to schedule an indoor air quality consultation and find the solution that works for your home.

Most homeowners think about their furnace or air conditioner when something feels off with their comfort, but the ductwork carrying that air matters just as much.

If you’re weighing whether new HVAC ductwork installation makes sense for your home, here’s a look at the signs to watch for, what the process involves, and what to expect from the first evaluation through the final walkthrough.

Why Ductwork Matters More Than Most Homeowners Realize

Ductwork is the delivery system for every degree of heating and cooling your HVAC equipment produces, which means even a brand-new, high-efficiency furnace or AC can’t perform the way it’s supposed to when the ducts moving that air are leaking, undersized, or falling apart.

Problems that seem unrelated to the ducts themselves, like a room that never quite reaches temperature or bills that keep climbing for no clear reason, often trace back to the duct system rather than the equipment.

Signs Your Home May Need New Ductwork

Not every comfort complaint points to a ductwork problem, but certain patterns recur in homes that need it.

• Inconsistent comfort: Uneven temperatures between rooms or floors, especially spaces that never match the thermostat setting
• Climbing energy costs: Rising energy bills without any real change in your household’s usage habits
• Visible damage: Crushed, disconnected, or rusted sections visible in the attic, basement, or crawl space
• Poor air quality: Excessive dust settling around vents or throughout the home
• Unusual noises: Whistling, rattling, or banging sounds when the system turns on

If several of these sound familiar, it’s worth having your ductwork professionally evaluated before investing in repairs that may not address the real problem.

What to Expect During a Ductwork Installation

A ductwork project moves through several distinct stages, and understanding each one makes the process far less unfamiliar once work actually begins.

1. A Home Evaluation and Load Calculation

Before any work begins, a technician walks through your home to evaluate square footage, layout, insulation, and the condition of any existing ductwork. This step determines the load calculation, which is the math behind how much conditioned air each room needs and how large the ducts serving that room should be. Skipping this step is one of the most common reasons ductwork underperforms.

2. A Detailed Duct Design

Once the load calculation is complete, the technician plans the actual layout of the duct system, including the length, size, and routing of each run. Even high-quality equipment can’t overcome ductwork that makes too many sharp turns or runs farther than necessary, so a well-planned layout minimizes airflow loss and helps every room reach temperature at roughly the same rate.

3. Removal of Old Ductwork, When Applicable

If you’re replacing an existing system rather than adding ductwork for the first time, the old ducts are removed before installation begins. This step often reveals problems that weren’t visible from the outside, such as disconnected sections hidden behind drywall or mold growth in areas with a history of moisture.

4. Installation and Sealing

With the old ductwork out and the design finalized, technicians install the new ducts and seal every connection point along the way. Sealing is one of the most overlooked parts of the process, but it has an outsized effect on how efficiently the finished system performs, since small gaps at the joints can let conditioned air escape before it reaches a vent.

5. Testing and a Final Walkthrough

Once everything is installed, technicians test airflow at each vent and compare it to the design, making any necessary adjustments before the job is considered finished. The homeowner then gets a walkthrough covering what was done and what to expect from the system going forward.

What Installation Typically Costs and How Long It Takes

Cost depends on a handful of factors that vary from home to home. The size and layout of the house plays the biggest role, since more square footage generally means more duct runs and vents to install, and homes that need extensive rerouting or removal of an existing system before installation can begin will also cost more. The materials used, whether that’s sheet metal, flexible duct, or insulated duct board, also factor into the estimate. 

Most residential projects wrap up in one to three days, though homes with tight crawl spaces or extensive rerouting tend to fall toward the longer end of that range. A professional evaluation remains the most reliable way to get an accurate number and timeline for your specific home.

Schedule Your Ductwork Evaluation Today

Ductwork problems rarely announce themselves clearly. They show up as a room that’s always a few degrees off, an energy bill that keeps climbing, or a system that never quite feels like it’s keeping up, even when the equipment itself is in good shape. Once the signs point back to the ducts rather than the furnace or AC, a proper evaluation is the fastest way to find out whether the fix is a targeted repair or a full installation, and to get a realistic sense of cost and timeline before committing to either.

Because ductwork affects how well your entire HVAC system performs, it’s worth working with an experienced ductwork company rather than choosing based on price alone. If your home’s comfort issues stem from outdated or poorly designed ductwork, Dugan Air Heating & Cooling can help. Contact us today to schedule a ductwork evaluation and learn what the installation would look like for your home.

If you have pets, allergies, dust, or odors at home, you may wonder what a purifier is used for and whether it can actually make your indoor air feel cleaner. An air purifier is designed to reduce airborne particles that move through your home, including dust, pet dander, pollen, and some odor-causing contaminants.

For Indiana homeowners, especially during allergy season or when windows stay closed, the right air purifier can help create cleaner indoor air and a more comfortable home. It will not replace cleaning, filter changes, or HVAC maintenance, but it can help reduce the particles that standard cleaning does not fully remove.

What Is an Air Purifier Used For?

An air purifier is used to capture or reduce small airborne particles before they continue moving through the home. Vacuuming, dusting, and changing filters all help, but particles can still become airborne when pets shed, doors open, people walk through the house, or heating and cooling equipment runs.

Depending on the type of purifier, it may help reduce common indoor air quality concerns like:

• Pet dander: Tiny skin flakes from dogs and cats can stay airborne and trigger allergy symptoms.
• Dust and debris: Airborne dust can settle quickly, especially in busy homes.
• Pollen: Outdoor allergens can enter through doors and windows, on clothing and shoes, and on pets.
• Odors: Some purifiers can help reduce smells from pets, cooking, smoke, or stale indoor air.
• Airborne irritants: Certain options can help reduce bacteria, viruses, mold spores, or other particles, depending on the technology used.

A purifier is not a cure-all, but it can be an important part of a cleaner indoor air plan when matched to your home and the concern you want to address.

When an Air Purifier May Help

An air purifier may be worth considering when cleaning alone does not seem to solve the problem. This is especially true in homes with pets, allergy-prone family members, frequent dust buildup, or rooms that feel stale even after regular cleaning.

Your Home Has Pets

Pets bring comfort and companionship, but they also add dander, hair, odors, and dust to the home. Even clean pets shed particles that can move through the air and settle into furniture, carpets, bedding, and ductwork.

An air purifier can help reduce the amount of pet dander and airborne debris circulating through the home. This may be especially helpful in homes with multiple pets, long-haired animals, or rooms where pets sleep and spend most of their time.

A purifier may help if you notice:

• Pet odors that return quickly after cleaning
• Dust buildup near vents or on furniture
• Allergy symptoms that feel worse indoors
• Pet hair and dander are collecting around the home
• Stale air in rooms where pets sleep or spend time

If pet-related air quality issues continue despite regular cleaning and filter changes, a whole-home air purifier may be worth considering.

Allergy Symptoms Feel Worse Indoors

Allergy symptoms are often tied to particles you cannot easily see. Pollen, dust mites, pet dander, mold spores, and other irritants can move through the home and trigger sneezing, congestion, itchy eyes, coughing, or general discomfort.

An air purifier can help reduce airborne allergens before they continue circulating. For allergy-prone households, this can make the home feel cleaner and more comfortable, especially during high pollen seasons or periods of poor outdoor air quality.

Purifiers work best as part of a larger indoor air quality plan. That may include better HVAC filters, routine maintenance, humidity control, duct cleaning when needed, and keeping return vents clear.

Dust or Odors Come Back Quickly

If dust returns soon after cleaning or odors never fully disappear, the issue may involve more than just surface buildup. Small particles can continue moving through the air before settling back onto furniture, floors, and vents.

An air purifier may help reduce particles that contribute to dusty surfaces and stale indoor air. It may also help with odors from pets, cooking, or smoke, as well as from rooms that do not get much fresh air.

However, the source of the odor still matters. A purifier can help reduce some airborne odor particles, but musty smells, moisture problems, or mold concerns may need a different solution.

Portable Air Purifier vs. Whole-Home Air Purifier

The right air purifier depends on the size of the home, the rooms you want to treat, your HVAC setup, and the specific indoor air concerns you want to address.

Here is the basic difference:

• Portable air purifier: Best for targeted support in a single room or smaller area, such as a bedroom, nursery, or home office.
• Whole-home air purifier: Best for broader indoor air quality support because it works with the home’s heating and cooling equipment.
• Filter upgrade: Helps capture particles as air moves through the home, but may not offer the same level of purification.
• UV light: Can help address certain biological contaminants inside HVAC equipment, depending on placement and setup.

Portable purifiers can be helpful, but they only treat the room they are running in. A whole-home air purifier can be a stronger option for families who want broader coverage instead of moving a portable unit from room to room.

When an Air Purifier May Not Be Enough

An air purifier can help improve indoor air quality, but it cannot fix every concern. If the home has leaky ductwork, poor ventilation, high humidity, mold growth, or dirty HVAC equipment, those issues may need to be addressed directly.

For example, a musty smell may point to moisture or mold. A room that always feels stale may have an airflow issue. Dust that returns almost immediately after cleaning may be tied to filtration, ducts, or equipment performance.

This is where professional indoor air quality service can help. Dugan Air Heating & Cooling offers air filters, purifiers, and UV lights for homeowners who want cleaner indoor air and a more complete solution than a standalone device can provide.

How HVAC Maintenance Supports Cleaner Indoor Air

Your heating and cooling equipment moves air throughout the home, so its condition matters. Dirty filters, dusty components, clogged coils, and weak airflow can all affect indoor air quality. Even a good purifier may struggle if the equipment is overdue for service.

Routine HVAC maintenance can help keep your equipment cleaner and more reliable. Dugan Air’s Clover Club maintenance plan provides homeowners with ongoing seasonal support and helps catch airflow, filtration, and equipment concerns before they affect comfort.

Maintenance is also a good time to ask whether a whole-home air purifier, UV light, or filter upgrade makes sense for your home. A technician can review your equipment and explain which option best fits your indoor air concerns.

Schedule Indoor Air Quality Service With Dugan Air

If you are still wondering what a purifier is used for, the short answer is that it helps reduce airborne particles that can affect comfort, cleanliness, and indoor air quality. For homes with pets, allergies, odors, or frequent dust buildup, the right purifier can make a real difference when it is matched to the home.

Dugan Air Heating & Cooling can help you compare air purifier options and choose the right indoor air quality solution for your home. Contact Dugan Air Heating & Cooling or call (317) 318-0995 to schedule service today.

When your AC is running, but the air still feels warm, it is easy to assume the compressor is the problem. The compressor is one of the most important parts of the air conditioner, and when it struggles, the entire cooling process can be affected.

The tricky part is that compressor symptoms do not always mean the compressor itself has failed. In many cases, the problem comes from an electrical part, an airflow issue, a dirty coil, or a refrigerant-related concern that affects how the compressor runs. In other cases, the compressor has internal damage, and replacement may be the better long-term choice.

That is why the right answer depends on what failed, how old the AC is, and whether the repair cost makes sense compared to replacement.

Why Compressor Problems Are Hard to Diagnose

A compressor helps move refrigerant through the air conditioner so heat can be removed from your home and released outside. If that process is interrupted, your AC may run without properly cooling the home.

However, compressor trouble can look like several other AC problems. For example, warm air from the vents could indicate a compressor issue, but it could also be due to low refrigerant, dirty coils, weak airflow, or electrical issues. A buzzing outdoor unit could mean the compressor is struggling to start, but it could also involve a bad capacitor or contactor.

Because the symptoms overlap, replacing the compressor should never be the first assumption. A professional diagnosis can help determine whether the compressor has failed or whether another repair can restore cooling.

Signs the Compressor May Be Involved

You may need compressor service if the outdoor unit sounds different, the AC doesn’t cool, or the unit starts experiencing electrical problems. These issues should be inspected quickly, especially during hot weather when the air conditioner is under heavier demand.

Signs the compressor may be involved include:

• Warm air is coming from the vents while the AC is running
• Buzzing, humming, rattling, or hard-starting noises from the outdoor unit
• Breakers tripping when the AC turns on
• Short cycling or frequent start-and-stop operation
• An outdoor fan that runs while the compressor does not start

These warning signs do not always mean the compressor is beyond repair. They do mean the air conditioner should be checked before the issue causes more damage.

When the Problem May Be Repairable

In many cases, homeowners are told they have a “compressor problem” when the issue is actually connected to a part that helps the compressor run. These repairs can often restore cooling without replacing the compressor itself.

Compressor-related repair may be possible if the issue involves:

• A failed capacitor
• A damaged contactor or relay
• Loose or damaged wiring
• Dirty outdoor coils
• Poor airflow
• A refrigerant-related performance issue

This is why diagnosis matters. If an external part is preventing the compressor from starting or running properly, repairing it may be enough to get the AC working again.

When Replacement Starts to Make More Sense

The compressor itself is a sealed component. If the internal parts fail, repair options are usually limited. At that point, the decision often comes down to whether it is worth replacing the compressor or replacing the full air conditioner.

Replacement may make more sense if the AC is older, the compressor is no longer under warranty, or the unit has needed multiple repairs in recent seasons. A major compressor repair can be expensive, and on aging equipment, that money may be better put toward a new AC.

AC replacement may be the better option when:

• The compressor has failed internally
• The AC is more than 10 years old
• Repair costs are high compared to replacement costs
• The unit uses outdated refrigerant
• Energy bills have been rising
• Comfort problems existed before the compressor issue

If the air conditioner was already struggling before the compressor problem, replacing a single major part may not resolve the broader comfort or efficiency concerns.

Why You Should Turn Off an AC With Compressor Symptoms

If your AC is blowing warm air, making loud outdoor noises, tripping breakers, or short cycling, it is best to turn it off and schedule service. Continuing to run an air conditioner with compressor-related symptoms can place more strain on electrical parts, increase repair costs, or lead to a full breakdown.

This is especially important if the breaker keeps tripping. Repeatedly resetting the breaker without addressing the cause can pose a safety risk and further damage the equipment.

How a Technician Decides Between Repair and Replacement

A repair-versus-replacement recommendation should be based on more than one factor. During the visit, a technician can check the compressor, electrical components, refrigerant-related performance, coils, airflow, and overall condition of the AC.

From there, the decision usually depends on:

• Whether the compressor itself failed or another part caused the symptoms
• The age of the air conditioner
• Warranty coverage
• Recent repair history
• Current cooling performance
• Estimated repair cost compared to replacement

A newer AC with a repairable electrical issue may be worth fixing. An older AC with a failed compressor, rising energy bills, and uneven cooling may be better replaced.

Schedule AC Compressor Service With Dugan Air

If your AC is running but not cooling, making unusual outdoor noises, tripping breakers, or turning on and off too often, Dugan Air Heating & Cooling can inspect the unit and explain the cause.

Our team can determine whether the issue involves the compressor, an electrical part, airflow, refrigerant-related performance, or another cooling concern. We will explain your repair and replacement options so you can make the right decision for your home. Contact Dugan Air Heating & Cooling or call (317) 318-0995 to schedule AC service today.

FAQs

Can you fix an air conditioner compressor?

Sometimes compressor-related problems can be fixed, especially when the issue involves a capacitor, contactor, wiring, airflow, or another external component. If the compressor has failed internally, replacement is usually more likely.

How do I know if my AC compressor is bad?

Common signs include warm air from the vents, loud outdoor unit noises, short cycling, tripped breakers, or an outdoor fan running while the compressor does not start. A technician should inspect the AC to confirm the cause.

Is it worth replacing an AC compressor?

It depends on the age, condition, warranty coverage, and repair cost of the AC. Compressor replacement may make sense for a newer unit, but full AC replacement may be better for older equipment.

Should I turn off my AC if the compressor is failing?

Yes. If your AC is making loud noises, tripping breakers, blowing warm air, or short cycling, turn it off and schedule service. Continuing to run the AC can make the damage worse.

If the AC is not functioning on a hot Indiana day, the instinct is to call for help immediately. That is not always the wrong move, but many of the most common reasons an AC stops working have nothing to do with a mechanical failure. Before scheduling a service call, there are four checks you can run yourself that take only a few minutes and often yield the answer.

This guide walks through each one in order, explains what to look for, and tells you exactly what to do depending on what you find. If you work through all four and the unit still is not cooling, that is a clear sign that something mechanical is wrong and a licensed technician needs to take a look.

4 Things to Check When Your AC Stops Working

Most AC problems that seem serious on the surface trace back to one of four things. Before calling for a repair, take a few minutes to check each of these on your own.

1. Start With the Thermostat

The thermostat is where every diagnostic should begin, and it is responsible for more service calls than most homeowners expect. Verify that it is set to cool, not heat or fan-only, and confirm that the set temperature is lower than the current room temperature. An air conditioner will not run if the thermostat does not see a reason for it to.

If your thermostat runs on batteries, replace them before moving on. Low battery voltage causes erratic readings, unresponsive controls, and blank displays, often without any obvious warning that power is the issue. If the thermostat appears to be functioning correctly and the unit still will not respond, move to the next step.

2. Check the Air Filter

A severely restricted air filter is one of the most common causes of AC shutdowns, and it is one that homeowners can address without any tools or technical knowledge. When the filter becomes packed with dust and debris, airflow across the evaporator coil drops to a point where the coil temperature falls below freezing. The coil ices over, and once that happens, the unit will shut down to protect itself from damage.

Locate the filter, typically found in the return air vent or inside the air handler cabinet, and pull it out for inspection. Here is what to look for:

• Appearance: A filter that appears grey, matted, or heavily discolored needs to be replaced immediately. Hold it up to a light source — if you cannot see light passing through the media, it is well past due.
• Age: Standard 1-inch filters should be replaced every 30 to 90 days, depending on household size, pets, and indoor air quality. If there is any uncertainty about when it was last changed, replace it now.
• Thickness: Thicker 4- to 5-inch media filters last longer under normal conditions, but they still require regular inspection and should be replaced when airflow restriction becomes visible.

After installing a fresh filter, check the indoor unit and refrigerant lines for ice. If ice is present, switch the system to fan only and allow it to thaw completely before attempting to run the cooling cycle again. Running the unit with a frozen coil will not restore cooling and can cause additional damage to internal components. Staying current with AC maintenance and replacing the filter on a consistent schedule is the most reliable way to prevent this from recurring.

3. Check the Circuit Breaker and Outdoor Disconnect

Air conditioners draw a significant electrical load, and a tripped circuit breaker is a frequent cause of an unresponsive unit. Go to your electrical panel and look for any breaker sitting between the on and off positions. To reset it properly, move it fully to off first, then back to on. A breaker that has tripped to the middle position will not reset by pushing it directly to the on position.

There is a second electrical control point that homeowners often overlook:

• Outdoor disconnect box: A disconnect box is mounted on the exterior wall near the condenser unit and contains a switch or fuse block that cuts power to the outdoor unit independently of the main panel. Open the cover and confirm the disconnect is in the on position and that no fuses inside are visibly damaged or blown.
• Repeated tripping: If the breaker trips again shortly after being reset, do not continue resetting it. A breaker that fails to hold is not a nuisance; it is a warning of an electrical fault inside the unit that requires professional diagnosis before the system is run again.

If the breaker holds and the unit resumes normal operation, monitor it through the first hour of runtime to confirm it does not trip again.

4. Clear the Area Around the Outdoor Unit

The condenser needs adequate airflow to release heat, and when grass, shrubs, or debris build up around it, the unit can overheat and shut down as a protective measure. Walk outside and confirm there is at least two feet of clear space on all sides.

Clear away any vegetation or buildup and rinse the exterior fins gently with a garden hose to remove dirt and debris from the surface. Avoid pressure washers, as the aluminum fins are delicate and prone to bending under high pressure. Bent fins restrict airflow and reduce efficiency even after the surrounding debris has been cleared. Give the unit several minutes to cool down before restarting it.

When These Steps Don’t Solve the Problem

If all four checks come back normal and the air conditioner is still not cooling, the cause is almost certainly mechanical. Refrigerant leaks, failing capacitors, compressor problems, and internal electrical faults are among the most common culprits at this stage, and none of them can be safely or accurately diagnosed without professional equipment. Continuing to run the unit when one of these issues is present risks compounding the damage and increasing what the repair ultimately requires.

At this point, the right move is to shut off the unit and schedule air conditioning service with a licensed technician who can identify the root cause and present you with a clear set of options.

Call Dugan Air When Your AC Isn’t Working

If you have gone through every step on this list and are still not getting cool air, Dugan Air is ready to help. Our NATE-certified technicians have been serving Johnson County homeowners since 2009 with straightforward diagnostics, transparent pricing, and a Premium Service, No Shenanigans promise on every job. Call us at (317) 318-0995 or contact us online to schedule your AC repair before the problem gets worse.

FAQs

Why is my AC running but not cooling the house?

An air conditioner that runs but fails to produce cool air is typically dealing with low refrigerant, a dirty evaporator coil, or a failing compressor. Each of these requires a professional diagnosis to confirm. Running the unit for an extended period when any of these conditions is present risks accelerating the damage, so scheduling a service call promptly is the right course of action.

How long does a typical AC repair take?

Most standard repairs, including capacitor replacements, refrigerant recharges, and electrical fixes, can be completed during a single service visit. More involved repairs such as compressor replacements or refrigerant leak diagnostics may require additional time depending on the location and extent of the problem. A technician can provide a more accurate estimate once the unit has been evaluated.

How do I know if my AC problem needs emergency service?

If the unit is making loud grinding or banging noises, if ice has formed on the refrigerant lines or indoor unit, if there is a burning smell coming from any component, or if the breaker continues to trip after being reset, those are situations that warrant emergency service rather than a standard appointment. Continuing to run the unit under any of these conditions risks compounding the damage significantly. Dugan Air offers 24/7 emergency AC repair for situations that cannot wait.

Annual professional maintenance is the baseline recommendation for air conditioning equipment, and Indiana’s climate makes adhering to that schedule more consequential than it is for homeowners in milder regions. Humidity, sustained summer heat, and significant seasonal temperature swings place consistent demand on cooling equipment throughout the season. 

Understanding how often to service your air conditioner, what a professional tune-up covers, and the warning signs that warrant attention outside a routine visit is the most effective way to protect both your equipment and your home’s comfort.

Why Annual AC Service Is the Right Call for Indiana Homeowners

Spring is the ideal time to schedule air conditioning maintenance, before the cooling season begins and before HVAC calendars fill up with repair calls driven by the first heat wave of the year. A tune-up completed in April or May means the equipment has been inspected, cleaned, and confirmed ready before it faces its heaviest demand.

Most manufacturer warranties require documented annual maintenance to remain valid, and consistent service directly impacts both equipment lifespan and operating costs. An air conditioner that receives regular professional attention runs more efficiently, experiences fewer breakdowns, and lasts longer than one that goes years without it.

What a Professional AC Tune-Up Actually Covers

A professional tune-up is more thorough than most homeowners expect. It is not a quick visual inspection but a detailed service visit that addresses the components most likely to affect performance and efficiency throughout a full cooling season.

During a typical visit, a technician will work through the following:

• Refrigerant levels: Low refrigerant is one of the most common causes of poor cooling performance. A technician checks the charge, tests for leaks, and addresses any imbalance that could cause the unit to run longer than it should.
• Coil cleaning: Dirty condenser and evaporator coils force the unit to work harder to transfer heat, increasing energy consumption and placing additional strain on the compressor. Cleaning them restores efficiency and reduces wear on the unit’s most expensive components.
• Electrical connections: Loose or corroded connections create safety risks and can cause components to fail without warning. A technician inspects and tightens connections throughout the unit during every visit.
• Condensate drain line: A clogged drain line causes water to back up into the unit or overflow into the home. Clearing it during a tune-up prevents water damage and keeps indoor humidity levels from climbing.
• Airflow and filter inspection: The technician checks the blower, evaluates airflow throughout the home, and inspects the air filter to ensure that conditioned air reaches every room without restriction.

Signs You Shouldn’t Wait for Your Annual Appointment

Annual service covers the routine side of maintenance, but some situations call for a technician sooner. If your air conditioner is displaying any of the following signs, scheduling a service call promptly is the more prudent course of action.

Rising Energy Bills

A noticeable increase in electricity costs during the cooling season, without a corresponding change in usage or weather, is one of the earliest indicators that equipment efficiency is being affected. The unit may be working harder than it should due to dirty coils, low refrigerant, or restricted airflow, none of which resolve on their own.

Addressing the underlying cause early typically means a straightforward repair rather than a component failure later in the season.

Uneven Cooling

Rooms that remain significantly warmer than others, or spaces that never reach the set temperature regardless of runtime, point to a unit that is no longer distributing conditioned air effectively. The cause may be an airflow restriction, a refrigerant imbalance, or a capacity issue that has developed over time. Uneven cooling is rarely a thermostat problem and warrants a professional inspection to identify the actual source.

Unusual Noises

Rattling, banging, squealing, or grinding sounds during operation are not normal at any stage of an air conditioner’s life. Each type of noise points to a different potential issue, from loose components and failing bearings to motor wear. The longer an unusual noise goes unaddressed, the greater the risk that a minor mechanical issue develops into a significantly more expensive repair.

Warm or Weak Airflow

Air that feels warmer than it should or airflow that seems noticeably weaker than in previous seasons indicates the unit’s cooling capacity has been compromised. Low refrigerant, a dirty evaporator coil, and blower issues are the most common causes. All of these require professional diagnosis to confirm and correct, and running the unit in a compromised state places additional strain on the compressor with every cycle.

Short Cycling

An air conditioner that turns on and off more frequently than normal accumulates unnecessary wear on its components with each cycle and will not self-correct, regardless of thermostat adjustments. Beyond mechanical wear, short cycling also reduces the unit’s ability to effectively remove humidity from the air, which, in Indiana’s summer climate, compounds the comfort problem considerably.

Ice on the Unit

Frost or ice forming on any part of the unit clearly indicates that something is preventing normal operation. Restricted airflow, low refrigerant, and dirty coils are the most common causes, and continuing to run the unit while ice is present risks compressor damage that is among the most expensive repairs an air conditioner can require.

If ice is visible, turn off the equipment, allow it to thaw completely, and contact a technician before restarting it.

Schedule Your AC Tune-Up With Dugan Air

If it has been more than a year since your last service visit, or you have noticed any of the signs above, now is the right time to get scheduled. Dugan Air has been serving homeowners throughout Johnson County and the surrounding area for over a decade, and our team is ready to help you head into summer with confidence. Call Dugan Air at (317) 318-0995 or contact us online to schedule your AC tune-up in Johnson County, IN, before the summer cooling season begins.

FAQs

Does Indiana’s humidity affect how often my AC needs service?

Indiana’s humidity puts additional strain on air conditioning equipment, particularly the coils and drain system. While once a year is still the standard recommendation, it makes sticking to that schedule even more important. Skipping a year in a high-humidity climate like Indiana’s carries more risk than it would in a drier region.

Can I handle any part of AC maintenance myself?

Changing or inspecting the air filter is something most homeowners can do on their own, and doing it every one to three months is a good habit. Everything else, including coil cleaning, refrigerant checks, and electrical inspections, should be handled by a licensed technician.

Will skipping maintenance affect my warranty?

Many manufacturers require proof of annual professional maintenance to keep the warranty valid. If a covered component fails and there’s no service record, the claim may be denied. Keeping up with annual tune-ups protects both your equipment and your coverage.

If you’re considering upgrading your home’s heating and cooling, heat pumps are well worth a look. The average cost of a new heat pump system typically falls between $5,000 and $12,000 in Indiana, though some installations can reach higher depending on your specific needs. This investment covers the equipment and professional installation, providing you with an efficient system that handles heating and cooling in Johnson County’s changing seasons.

Key Takeaways

• The average cost to install a heat pump in Indiana is generally between $5,000 and $12,000.
• Variables like system size, efficiency ratings, and installation complexity affect the final price.
• Replacing an existing heat pump often costs less than a new installation since the infrastructure is already in place.
• Heat pumps are worth it in Indiana because they provide heating and cooling with greater energy efficiency than traditional systems.
• Working with experienced local technicians who understand Indiana’s climate helps optimize system performance and longevity.

New Heat Pump Installation Costs in Indiana

The cost of a new heat pump varies widely depending on your home’s specific requirements and the system you choose. For most homeowners in Franklin and surrounding communities, a complete heat pump installation involves equipment, labor, and any necessary modifications to your home’s existing infrastructure.

Smaller homes in Greenwood with basic heat pump installation needs might see costs on the lower end, around $5,000 to $7,000. Mid-sized homes with standard configurations often fall in the $7,500 to $10,000 range. Larger homes or properties requiring significant modifications, additional ductwork, or premium high-efficiency systems can reach $12,000 to $15,000 or more, depending on the scope of work.

The type of heat pump you choose also impacts the overall investment. Traditional ducted systems generally cost less upfront than ductless heat pump configurations. Indiana’s climate makes heat pumps an increasingly popular choice. Modern heat pumps perform efficiently even during our coldest winter months, with advanced models including backup heating elements.

Average Cost to Replace a Heat Pump

The average cost to replace a heat pump ranges from $4,500 to $10,000 for most Indiana homeowners. Replacement projects can cost less than brand-new installations because the necessary infrastructure is already in place. However, replacement costs may increase if your current system is outdated and requires updates to meet modern standards, such as electrical panel upgrades or ductwork modifications.

If your current heat pump experiences frequent breakdowns, struggles to maintain comfortable temperatures, or your energy bills have increased significantly, replacement may make more financial sense than continued repairs. 

Heat Pump Cost Factors Indiana Homeowners Should Know

Several variables influence the final price of your heat pump system. By taking the time to understand these factors, you can budget appropriately for your home’s comfort needs.

Size & capacity

Size directly impacts the cost of a new heat pump system. HVAC professionals measure capacity in tons, with residential systems typically ranging from 1.5 to 5 tons. Our NATE-certified technicians perform detailed load calculations that account for your home’s square footage, insulation levels, window placement, and other factors to determine the right size.

For a typical 1,500-square-foot home in Columbus, IN, a 2.5 to 3-ton heat pump often provides adequate heating and cooling, though actual sizing varies based on insulation, ceiling height, and home layout. Properly sized systems maintain comfortable temperatures without wasting energy or experiencing premature wear.

Efficiency ratings

Efficiency ratings significantly affect both the upfront cost and long-term operating expenses of your heat pump. The Seasonal Energy Efficiency Ratio (SEER) measures cooling efficiency, while the Heating Seasonal Performance Factor (HSPF) indicates heating efficiency. Higher ratings mean better performance and lower energy consumption.

Standard efficiency heat pumps have SEER ratings of 14 to 16, whereas premium high-efficiency systems may boast SEER ratings of 18 or higher. For homeowners who want an energy-efficient heating system, investing in a more efficient model can provide long-term value through lower monthly utility costs.

System type

Traditional air-source heat pumps are the most common and affordable option, transferring heat between your home and the outdoor air. Ductless mini-split heat pumps offer flexibility for homes without existing ductwork. Geothermal heat pumps represent the premium option with exceptional efficiency, but installation requires significant excavation work. 

For most Johnson County homeowners, air-source heat pumps provide the best balance of performance, reliability, and value.

Site & installation complexity

Your property’s specific characteristics can significantly impact installation costs. Homes with straightforward access, existing compatible electrical service, and well-maintained ductwork often fall on the lower end of the price spectrum. Properties requiring additional work see higher costs.

If your home needs electrical upgrades to support the new system, you might budget an additional $500 to $2,000. Homes with damaged ductwork may need repairs or replacement, while properties with challenging outdoor unit placement can add $500 to $1,500. Older homes may need additional modifications like upgrading thermostats or adding supplemental insulation. 

Our technicians assess your property during the initial consultation to identify any potential challenges and provide accurate cost estimates.

Labor costs

Professional installation represents a significant portion of your total investment, often accounting for 30% to 50% of the project cost. Working with NATE-certified technicians who understand local building codes and climate conditions adds immeasurable value beyond basic installation.

At Dugan Air, our EPA-certified technicians bring years of experience installing heat pumps across Indianapolis and throughout Johnson County. We know the local requirements, understand how Indiana’s climate affects system performance, and stand behind our work with comprehensive warranties. Our Premium Service, No Shenanigans approach means you get honest assessments, transparent pricing, and quality workmanship without the gimmicks.

Ways to Save on Heat Pump Installation

You can offset the cost of a new heat pump system without compromising quality or performance in several ways. 

• Heat pumps qualify for federal tax credits under the Inflation Reduction Act. 
• Local utility companies throughout Indiana frequently offer rebates for installing qualifying heat pumps.
• Dugan Air offers flexible financing plans with approved credit, allowing you to spread the cost over manageable monthly payments.
• Regular maintenance after installation protects your investment and helps prevent costly repairs.

Keeping your system well-maintained extends its lifespan and helps you avoid expensive emergency breakdowns that could require a heat pump replacement. If you’re wondering whether you can replace a gas furnace with a heat pump, our technicians can assess your Indiana home and recommend the most cost-effective approach.

Invest in Year-Round Comfort With an Energy-Efficient Heat Pump

Now that you better understand the cost of new heat pump systems, you can make an informed decision about your home’s heating and cooling needs. While the initial investment can be higher than traditional gas furnaces, modern heat pumps offer long-term value through reduced energy bills, lower maintenance costs, and reliable performance in both summer and winter. 

At Dugan Air Heating and Cooling, we’re committed to delivering Golden Service to homeowners throughout Franklin, Columbus, and surrounding Johnson County communities. Contact us today to discuss your heat pump options and receive a free estimate. Experience the Dugan Difference with a touch of Irish charm and a strong commitment to your comfort.

What does ‘auxiliary heat’ mean on your thermostat? You might have noticed this little setting the last time you changed your heat pump’s temperature and wondered what it meant. In this quick guide, we’ll explain what AUX heat is, why it turns on, and whether it means you need an HVAC professional to inspect your system.

Key Takeaways

• Noticing the word ‘AUX’ on your thermostat means your heat pump’s auxiliary heater is running.
• Heat pumps may use auxiliary heating during extreme cold spells, big temperature changes, or if there’s a problem with the system.
• It’s normal for auxiliary heat to run occasionally, but if it runs too often, it can significantly increase your energy costs.

What Does “AUX” Mean on a Thermostat?

If you have a heat pump, you may occasionally notice that your thermostat says, “AUX heat on.” Auxiliary heat refers to a secondary electric heater that kicks in when your heat pump is unable to heat your home for whatever reason. Think of it as an invaluable backup, ensuring your home is always being heated, even if there’s a problem with the heat pump.

Why Does Auxiliary Heat Come On?

Why does auxiliary heat turn on? There are a few typical scenarios, including:

Cold outdoor temperatures

Considering their cost, heat pump installations in Indiana can be a great investment. However, even the best systems only function effectively down to -13ºF. If it’s colder than that outside, your heat pump won’t be able to pump warm air into your home. 

In these cases, the auxiliary heat kicks on to ensure you don’t freeze in the meantime. This is why some Indiana homeowners opt to keep their gas furnace over a heat pump.

Sudden temperature changes

If you rapidly change the temperature on your thermostat, there’s a chance the heat pump will turn on auxiliary heating to help the space warm up more quickly. This helps reduce strain on the heat pump, making it less likely to require heat pump repairs.

Heat pump not working efficiently

Heat pumps can face winter efficiency challenges, especially if you haven’t kept up with regular maintenance over the past year. If your system is struggling to operate optimally, it may turn on auxiliary heating to bring your home up to temperature.

Poor insulation or air leaks

Another potential cause of auxiliary heating turning on is issues with your home’s air sealing or insulation. These help keep warm air inside the home, preventing it from escaping through gaps in the structure or uninsulated building materials. If warm air is escaping too quickly, your heat pump may activate auxiliary heat to maintain the temperature.

Does Auxiliary Heat Increase My Energy Bills?

Now that we know what ‘AUX’ means on a thermostat, let’s get to the real question: Does it cost you more money to run this extra system? 

Heat pumps don’t generate heat themselves. Instead, they extract heat from the outdoor air and simply pump it into your home. As a result, they offer superior heating efficiency benefits compared to furnaces and other power-based heating systems.

Auxiliary heating, on the other hand, functions more like a furnace or other heating unit. This means it can significantly increase your energy bills over time, reducing the savings you’ll see from the heat pump.

How Long Is It Normal for AUX Heat to Run?

If the auxiliary heating only engages during a temperature change or a heat pump defrost cycle, you can expect it to run for 15 to 30 minutes at a time. This is normal and shouldn’t give homeowners too much to worry about. 

The issue comes if your AUX heating runs for hours at a time. Because of the much lower efficiency of this setting, you’ll pay a lot more in utility bills. Plus, you’ll likely notice your home just isn’t as comfortable as it is when the heat pump is up and running.

How Do I Stop Auxiliary Heat from Coming On?

There are a few simple ways to prevent auxiliary heat from kicking in, potentially saving you hundreds of dollars each winter. Here are a few tips:

• Look for ‘balance point’ or ‘AUX settings’ on your thermostat, adjusting them to a lower outdoor temperature
• Only adjust your thermostat 1 to 2 degrees at a time
• Keep up with heat pump maintenance, including changing air filters and cleaning coils
• Have your home inspected for air leaks and insulation issues

When Should You Call an HVAC Professional?

If the steps above don’t seem to make a difference, it might be time to have an HVAC professional inspect the system. Dugan Air regularly provides heat pump services in Indianapolis, Columbus, Greenwood, and beyond, helping homeowners resolve troublesome heat pump issues.

An HVAC technician will inspect the entire heat pump system, including the indoor air handler, outdoor compressor unit, and thermostat. They’ll look for anything that might be causing the auxiliary heater to switch on too often and can make repairs, tune-ups, and minor changes that help your heat pump run more smoothly and efficiently.

Enjoy Year-Round Home Comfort with Dugan Air, Heating & Cooling

Heat pumps provide a comfortable home at a significantly lower energy cost. However, unexpected auxiliary heat operation can pose a problem, which is where we come in to help. Our team has the skills, tools, and experience to address any heat pump issue you may be facing, helping your system run reliably and efficiently again. For more information or to schedule a heat pump service appointment, don’t hesitate to get in touch.