Top rated
4.9
Dale Miller
23 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
3 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


“Interstate installed my HVAC system in a new construction condo. After living in it for 16 months, I realized I hadn't replaced my filters. I called to have the system checked. Eric found my Aprilaire Humidifier wasn't working because of funky wiring and the filter was not installed correctly.”

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'- Janine A.

“Interstate was absolutely wonderful to work with. They answered any and all questions that I had. (And I had a lot of questions) They gave me information on when the work would take place and had my Carrier Infinity furnace/ AC unit in very quickly. The installation crew was also very knowledgeable and polite. They also helped me with paperwork for a rebate as well. Please note that Carrier is the way to go….. My old Carrier AC unit was 38 years old and STILL working!!!
I was in construction for 37 years and can tell good contractor people. Interstate was fantastic to do business with!”

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'- Gregg B.

“Total Care Package — AC Maintenance & Gas Leak Repair
Dylan is very friendly and knowledgeable. He was able to complete the AC maintenance, re-check the gas leak, and repair the gas pipe where the gas leak was with no problems. Thanks Dylan!”

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'- Bobbi H.

“Eric was reliable, courteous and fixed the air conditioner without trouble. I would call him again if the air conditioner needed service.”

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'- Cristine M.

“Our AC wasn’t working properly. I called and Interstate was able to send someone the same day. Casey came out and troubleshooted our issue right away and got it fixed quickly. He also cleaned up everything and was professional. Thank you Casey for a job well done.”

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'- Laurie R.

Need HVAC Service?

Contact the experts at Interstate Heating Co..

Call us at 262-246-4772!