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Fast, reliable HVAC system service

Contact Us Today  (608) 478-8991

Contact Us Today (608) 478-8991

With 24/7 HVAC technician services available in Madison, WI, Harker Heating and Cooling is ready to install, maintain and repair your home’s heating and cooling systems.

Need 24/7 emergency HVAC repair?

Service quote

Over 70 years of
home heating & cooling experience

Harker Heating & Cooling Inc. has provided high-quality heating and cooling services to residents of Dane County since 1949. Our dedicated staff of HVAC specialists is available to handle any emergency, installation or repair 24/7, 365 days a year. Count on Harker to get the job done right.

An HVAC service
contractor with
values and integrity

We believe everybody should feel comfortable in their home. In Wisconsin where the weather can swing from one extreme to another, you want to be able to rely on your HVAC systems to function at optimal levels. When it comes to repairing or replacing your furnace, air conditioner, fireplace, or water heater, you can rest assured that Harker’s team of HVAC contractors will provide an honest assessment of the problem, and provide you with the most affordable solution.

Furnace and A/C unit
breakdowns are frustrating

That’s why we make it fast and easy to request an in-home estimate. Once you request a service, our team will arrive ready to perform repairs or replacements on-time and on-schedule. Don’t waste your time with dodgy HVAC contractors. Trust our reliable, efficient HVAC experts to get the job done.

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HVAC Blog

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Mastering Lake House Climate Control

Get the most out of your summer getaway with expert Lake House Climate Control tips. Learn how to maintain your HVAC system, improve indoor air quality, and boost energy efficiency for a comfortable, worry-free vacation.

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What Our Happy Customers Are Saying

Henry Steinberger
42 minutes ago
Mark came and fixed it and showed me what had not worked but didn’t try to sell me on replacing the part that had got stuck. I now know how to fix it if need be and I’d call Harker again if I have a similar in the future. Mark is knowledgeable, neat and friendly.
Katelin Cairns
28 minutes ago
Mark Herman
14 hours ago
Good communication. I feel like every tech we have had come here has sought to give us value for the trip charge.
C W
3 days ago
Heath Moore
3 days ago
Friendly and knowledgeable.
Technician knew what the problem was and fixed it. He attempted some conventional methods before deciding on replacing a small valve which turned a $125 visit to a $280 visit. I guess parts are expensive!
Bob Frautschy
4 days ago
Clean install, cleaned up when done. Personable technicians.
Andrea Burdick
4 days ago
Ty was great! He was friendly and professional and a pleasure to work with. 5 stars!
Courtney OBrien
7 days ago
Brandon was outstanding!
His knowledge, professionalism and understanding was outstanding! We plan to switch to Harker for our Heating and A/C needs going forward. We will request Brandon for our further needs. Thank you, Brandon!
Kathleen Walker
1 week ago
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!