Top rated
4.9
Dale Miller
24 hours ago
Here right away. Knowledgeable. Friendly. Thorough. Couldn't ask for more.
Response from the owner:Hi Dale, thanks for your 5-star review of Josh's visit to your home. We're glad to hear that his service was to your standards. Interstate Heating Co., Inc Muskego | Waukesha | Mukwonago | Maintenance
Sandra Feller
2 days ago
Friendly and great service!
Response from the owner:Sandy, thank you for your kind words. We're happy we could get that unit replaced before the cold weather hits. We are always a phone call away. Interstate Heating Co., Inc Waukesha | Pewaukee | Sussex | Replacement
Andy Murphy
4 days ago
On time, knowledgeable and efficient.
Paul Schreiber
4 days ago
Great job.
Mark Kaminski
6 days ago
Tristan did an outstanding job! As usual, I have always been satisfied with the service we received from Interstate.
Paul Miller
1 week ago
Technician arrived on time. He was courteous, professional, and check system thoroughly. Turns out thermostat was off.
Response from the owner:Thanks, Gordon, for leaving a 5-star review. We appreciate your business and we're glad it wasn't a more serious issue. Interstate Heating Co., Inc Oconomowoc | Pewaukee | Hartland | Repair
Carla Cross
1 week ago
Customer service friendly and helpful scheduling services. Communicates via text and email on the status of repair person. Repair person works efficiently and provides training on new equipment installed.
Mark Treadaway
2 weeks ago
Efficient, polite, and professional. You’ve got a very good employee working for you.
Response from the owner:Thank you so much for the 5-star review! We truly appreciate your support and are glad to hear you had a great experience with our team. INTERSTATE HEATING CO. INC, HVAC | BROOKFIELD | DELAFIELD | MAINTENANCE
Martin Wisland
2 weeks ago
Response from the owner:Hi Martin, thanks for taking the time to leave a review for your maintenance visit. Kudos to you for keeping up on your preventative maintenance annually! Interstate Heating Co., Inc Menomonee Falls | Brookfield | Colgate | Maintenance


“Jason and Ryan did an excellent job installing our new Carrier furnace! Both were extremely knowledgeable about the product and it's performance confidently answering my questions.
Ryan even returned late Friday afternoon to correct a small water leak in a plastic drainage hose. That effort was above and beyond. We were very satisfied with the installation and the unit in general.”

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'- Hugh W.

“We have an annual service contract for our furnace and air conditioner, and this was our first experience with Casey. He is professional, courteous, and thorough. He was a little early for our appointment, which was great. Casey explained what he did with the air conditioner and added refrigerant, with our okay, since it was a little low, although he said it wasn’t an immediate necessity. He also reminded us to be sure to change our furnace filter in the near future. We are very satisfied with Casey’s work. Our goal is to keep our air conditioner and furnace in peak condition, and Casey, as well as the previous Interstate Heating servicemen, have met our expectations. Keep up the good work. Thank you.”

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'- Gregg and Judy C.

“Had a gas smell issue and the repairman responded right away even though it was after hours. Very knowledgeable and friendly; easy to work with and answered all my questions. Very happy with his services.”

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'- Marty T.

“The installers were great. They answered all my questions and set up the zone control exactly the way I wanted. The new furnace is quiet, efficient and the house is cozy. They even took the time to fix a whistling damper that was installed by a different company. Very pleased. I highly recommend Interstate to anyone who needs HVAC service. Good guys.”

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'- Steve S.

Need HVAC Service?

Contact the experts at Interstate Heating Co..

Call us at 262-246-4772!