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Harker Heating & Cooling

HVAC Companies in Madison, Wisconsin

Ranked #3 in Madison | Grade A-
4.90 (1,789 reviews)(608) 630-9873

Harker Heating & Cooling

Local HVAC company providing repair, maintenance, and installation for heating and cooling systems in the Madison, Wisconsin area, including thorough diagnostics and prompt replacements when needed.

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Why Homeowners Choose This Business

Customers highlight clear communication, thorough diagnostics, and quick turnarounds, including next-day installs when needed. The team explains findings, reviews options, and completes tidy equipment change-outs with needed accessories Local experience that helps homeowners across Madison, Wisconsin compare a more region-aware provider.

Service Area

Headquartered on Nob Hill Rd in Madison, Wisconsin and serving the surrounding Dane County communities.

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Listing details

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  • Service information
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  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.

  • Maintains a competitive standing in this market.
  • Performs at or above the local average rating.
  • Has more review volume than many local competitors.
  • Shows strong customer satisfaction signals based on review quality and volume.

Trust Signals

Open 24 hours; after-hours appointments referenced in reviews. Call for current availability.

Services Covered

Renovation Services Furnace Repair AC Installation Hvac Maintenance Installations Repairs Thermostat Replacement Gas Fireplace Service Water Heater Replacement Heating System Installation Air Conditioning Repair Indoor Air Diagnostics Ductwork Adjustments

Furnace repair and replacement, AC repair and installation, system tune-ups and safety inspections, thermostat installation, minor ductwork adjustments during installs, gas fireplace cleaning and repair, water heater replacement.

Reviews

Customer Reviews

Sarah Pink

Our gas fireplace was turning off randomly after 20 years of being neglected and I assumed we would need to spend a few thousand to replace it since everything else in our home has “reached end of life”. The service tech cleaned the entire…
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Our gas fireplace was turning off randomly after 20 years of being neglected and I assumed we would need to spend a few thousand to replace it since everything else in our home has “reached end of life”. The service tech cleaned the entire thing, fixed a gas leak, made sure the foam logs were properly installed per the figure he somehow found in the internet, even cleaned the glass inside & out. He spent over 2 hours making sure it was all running correctly and even vacuumed the area he worked in. He was very professional, friendly and knowledgeable. Honestly it was the best service provider I’ve had in our home and the cost was one of the lowest too. A+++ Matthew.

Kathleen Walker

Adrian was professional and courteous and knowledgeable and performed CO2 analysis and checked all system error codes, reviewed readings with me and discussed options for furnace replacement. Contacted sales and we ask worked together to ar…
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Adrian was professional and courteous and knowledgeable and performed CO2 analysis and checked all system error codes, reviewed readings with me and discussed options for furnace replacement. Contacted sales and we ask worked together to arrive at the best decision. Installation team was available same day to complete removing the old and installing the new with necessary ductwork, hoses, smart thermostat. I’m very pleased I called Harker!

Anders Gurda

Recently had a hot water heater installed by these guys. Communication was great, and the quality of the actual workmanship seems solid. However, the care taken for our house wasn’t awesome. In draining the old tank, they plastered applianc…
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Recently had a hot water heater installed by these guys. Communication was great, and the quality of the actual workmanship seems solid. However, the care taken for our house wasn’t awesome. In draining the old tank, they plastered appliances and boxes in our basement with the scale-filled water and didn’t bother to clean it up. Just a little bit of care to MOVE things out of the way and clean up after would have been easy and appreciated. And their quote was far from the cheapest so I expected better. When I reached out what I heard was a genuine but insufficient ‘oh, sorry’. Not looking for handouts here, but if you miss the mark on something, there are plenty of ways to make it right, none of which they offered. Will probably look elsewhere for my next hvac need.

Mike Graham

We had an inspection of our furnace on a Friday and they found a hole in our heat exchange, so we wanted to have it replaced as soon as was possible. We got a few quotes, and they were similar, but the products Harker offered and the quote…
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We had an inspection of our furnace on a Friday and they found a hole in our heat exchange, so we wanted to have it replaced as soon as was possible. We got a few quotes, and they were similar, but the products Harker offered and the quote they provided convinced us to go with them. They were able to install the next day and two techs removed the old furnace and installed the new in about 3 hours. They were great, and I would use Harker again for sure. Harker wasn't the least expensive, but they offer good value. I like that they are are a union shop, have a long history in the area, and also the vibes from everyone we spoke with were excellent.

Louis

I called Harker after hours for a furnace repair. The AI system was remarkably easy to schedule the appointment. The technician assigned, Matthew, was on time. Mathew immediately diagnosed the problem and was able to fix it. He then proceed…
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I called Harker after hours for a furnace repair. The AI system was remarkably easy to schedule the appointment. The technician assigned, Matthew, was on time. Mathew immediately diagnosed the problem and was able to fix it. He then proceeded to check multiple other parts of the furnace to ensure they were working and/or clear of fluids. Matthew was happy to explain what he was doing and how the issues impact the broader appliance. Overall I was impressed and very pleased. I certainly would recommend Harker to others and would suggest they ask for Matthew.

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Special Offers

Emergency Service

Emergency service may be available for urgent issues.

Frequently Asked Questions

Do you offer 24/7 service in Madison?

The business lists 24-hour availability and reviews reference after-hours scheduling and service. For immediate needs, calling is the best way to confirm current response times.

Can Harker repair or clean gas fireplaces?

Recent customer feedback describes technicians cleaning, repairing, and reassembling gas fireplaces. They also perform leak checks and verify proper operation after service.

How quickly can a furnace be replaced?

Several reviews mention next-day installation after a safety issue or equipment failure. Actual timing depends on equipment availability and scheduling at the time you call.

Do technicians review options and pricing before work?

Reviews regularly mention technicians explaining diagnostics, sharing readings, and discussing replacement options when appropriate. You can request a written estimate before authorizing work.

What HVAC brands do they install?

Specific brands aren’t consistently listed in public sources. Contact the office to confirm current lines, model options, and warranty details for your project.