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HVAC service>>Furnace >> Repair
With years of experience in furnace and home heating system repair and a team of highly skilled HVAC technicians, we are committed to ensuring your home or business remains warm and comfortable, no matter the weather. From fixing minor issues to handling complex furnace malfunctions, we are the furnace repair company to get the job done efficiently and affordably. Trust us to deliver exceptional service throughout Waukesha County and keep your heating systems running smoothly all year round.
Furnace not blowing hot air? Call Prompt!
Headquartered in Waukesha, Wisconsin, Prompt Heating & Air Conditioning repairs heating systems throughout Southeastern Wisconsin. We’re a local company known for our friendly service and fair prices.
You’ll never get stuck with surprise furnace repair costs. We give a plain-language explanation of the issue and a firm price quote before getting to work.
We successfully help you troubleshoot your furnace over the phone. Give us a call to describe your furnace problem, or contact us online to schedule service.
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We have vast experience repairing residential furnaces. We work with both owners and landlords who need reliable furnace repair services. Whether you’ve got a historic home or a newly-built house, we’ll fix your heating system so you can stay cozy.
We provide furnace repair services in light commercial settings, such as restaurants, stores and small offices (no high-rises). We also provide light commercial furnace maintenance to keep your heating system running at max efficiency to save you money.
Forced-air natural gas furnaces are the most commonly used residential (and light commercial) heating systems in Waukesha, WI. Prompt Heating & Air Conditioning provides expert, warrantied repair service for single stage, two-stage and modulating gas furnaces in all major brands.
Furnace repair costs vary based on the cause of the problem, how long it takes to repair and if any replacement parts are needed. Once we’ve diagnosed the issue, you’ll get a firm repair quote for the total price to fix your furnace. We understand cost is an important concern for our customers, so we keep our pricing fair and explain the work ahead of time. No surprises!
At Prompt Heating & Air Conditioning, we repair all types of furnace problems for Waukesha homes and small businesses. Whether your system isn’t heating properly or has completely stopped working, our experienced HVAC technicians deliver fast, affordable furnace repair to keep your home warm and safe.

If your furnace is running but only producing cool air, the issue may involve a clogged air filter, a faulty ignitor, or a thermostat problem. We’ll quickly diagnose the cause and restore heat to your home.
When your furnace won’t start, it could be due to an ignition failure, tripped circuit breaker, or safety switch issue. Our team provides reliable gas furnace repair to get your system working again.
Poor airflow and inconsistent heating often result from dirty filters, duct leaks, or blower motor issues. We’ll identify the problem and make sure your home heating system runs efficiently.
Short cycling wastes energy and puts extra strain on your furnace. We’ll inspect your heat exchanger, flame sensor, and venting to fix the problem and improve performance.
Rattling, banging, or screeching sounds are signs of mechanical issues or worn parts. A burning smell could indicate overheating. Our technicians provide expert furnace service before small issues become costly repairs.
If your gas furnace pilot light keeps going out or your electronic ignition fails, we’ll clean or replace the necessary components for a lasting fix.
See why homeowners rate us 5 stars for furnace repair in Waukesha County. Read real reviews or schedule your service today to experience our dependable, friendly customer care.
Excellent service, price, workmanship and professionalism. Prompt is my go to provider for both my furnace and air conditioning needs. I recommend Ty and Prompt Heating and Air conditioning to everyone I know without hesitation!
All ReviewsRead more reviews or get in touch with us to see for yourself!

Yes. If the burner isn’t working right or the heat exchanger has a crack, carbon monoxide gas can escape. It’s important to have carbon monoxide detectors on each level of your home. We recommend regular furnace maintenance to help prevent dangerous situations like carbon monoxide being released from a malfunctioning heating system.
They can be. If not properly maintained, older furnaces can develop unnoticed cracks in the heat exchanger which allows carbon monoxide gas to leak out. Older furnaces can also develop leaks in the gas line, which is very dangerous. Regular furnace tune-ups help prevent the dangers associated with aging furnaces.
They can be. If not properly maintained, older furnaces can develop unnoticed cracks in the heat exchanger which allows carbon monoxide gas to leak out. Older furnaces can also develop leaks in the gas line, which is very dangerous. Regular furnace tune-ups help prevent the dangers associated with aging furnaces.
Yes, though it’s uncommon. Clogged air filters, dust buildup, or blocked vents can cause overheating and create a fire risk. Keep the area around your furnace clear, replace filters regularly, and avoid storing flammable materials nearby.
If you smell gas, turn off your furnace immediately, leave the home, and call your gas company or 911. A burning smell (especially when first turning on your furnace) may indicate dust on the heating elements, but persistent odors could mean electrical issues or motor problems. Have a professional inspect it to be safe.
Always follow the instructions of your furnace contractor and their customized maintenance schedule recommendations.
There are many things that can cause a furnace to make strange noises or stop working, and we’ve seen them all:
Call Prompt Heating & Air Conditioning and we'll identify and fix the problem, whatever it is. Once your furnace is functional again, we’ll share any helpful pointers to keep the same thing from happening in the future, and to help your heating system run as efficiently as possible.
We repair all major furnace brands including (but not limited to):
In addition to furnace repair, we offer:
All work is backed by a 2-year workmanship warranty. Members of our service plan receive seasonal tune-ups plus discounts on other products and services.
Our service area covers all of Milwaukee, Waukesha & Washington counties, including West Allis, Wauwatosa, Brookfield, Elm Grove, Greenfield, Franklin, Hales Corners, St. Francis, Cudahy, Bay View, Oak Creek, Menomonee Falls, Shorewood, Glendale, Whitefish Bay, Delafield, Pewaukee, Butler, Sussex, Lannon, Brown Deer, Richfield, Hubertus, Slinger, Hartford, New Berlin, Waukesha, West Bend, Mequon, Grafton, Germantown & the surrounding communities.
Someone from our team will contact you.
Repair costs for furnaces can vary depending on the type of repairs that need to be completed. To get an accurate cost estimate, contact our professionals today.
Furnace repairs should happen when you think something is wrong with your furnace, or twice a year. It is better to catch them before they break. Contact a local HVAC contractor to learn more.
Every furnace repair is different, so it depends. Once we know what the problem is, the technician can give you a better idea of how long it will take to fix. We’ll always do our best to repair your furnace as efficiently as possible. We respect your time, which is why we have 30-minute windows for service calls (most companies give a 2-4 hour window).
No, you should not complete furnace repairs on your own. A local HVAC technician will be the person who knows how to repair your furnace correctly. Contact Prompt today for more information.
Prompt offers 24/7 emergency furnace services around Wisconsin. Learn more about our furnace repair services today.
In general homeowners insurance won’t cover furnace repair caused by normal wear and tear or old/faulty equipment. If your furnace was damaged in a fire, break-in or natural disaster, it most likely is. Some insurance companies offer coverage for mechanical breakdown of appliances that you can add to your policy. You’ll need to check your insurance policy and contact your agent to make sure. On the other hand, most home warranties cover furnace repair or replacement – but you’ll need to read your warranty to find out what constitutes a valid claim and how it will be handled.
A rule of thumb is when the cost of repairs approaches half the cost of a new furnace, you’re probably better off replacing it. If your furnace goes from relatively problem-free to needing repairs more frequently all of a sudden, that may be another sign it’s reaching the end of its service life (on average 15-20 years for a household furnace). Before you decide to invest in a new furnace, get a professional opinion. We’ll always help you get the longest possible service life out of your heating system before recommending replacement.