Excellent
4.9
Paul Schmid
3 days ago
Eric explained all issues with system and was very courteous. Would highly recommend 👌
Karen Branch
4 days ago
Prompt service and had the parts needed to work the AC again.
Response from the owner:Thank you for your feedback. We appreciate you taking the time to share your experience. We understand that pricing for maintenance can sometimes feel higher than expected. Our goal is to always provide reliable, high-quality service using skilled technicians and dependable materials to ensure long-term value and peace of mind. That said, we never want cost to feel like a surprise or barrier. We're always happy to walk through estimates in detail, discuss options and find solutions to best fit your needs and budget. We truly value your business and hope to have the opportunity to serve you again and provide an even better experience next time. Interstate Heating Co. Inc, Mequon | Germantown | Thiensville | Maintenance
Julie Offutt
5 days ago
Eric serviced our air conditioner; outstanding. Our system is significantly more efficient now that it's clean. Tristan was amazing. He advised me to close vents/redirect air to the rooms that needed more heat and to leave on the fan to protect our HVAC system: : : he did suggest adding a line to the basement to give more heat as well which we will likely do. He was an extremely knowledgeable, skilled and kind service man : thank you-Julianne
Excellent service. Knowledgeable and caring serviceman!!
Kath Swanson
7 days ago
Chris is an excellent technician. He is prompt, polite, competent, and explains the services and/ or fixes clearly.
Gary Webb
7 days ago
Eric was awesome, did a great job, quick, complete job, explained everything, all for a fair price.
He was very Thorough and explained everything. He was here last year and talked to Dennis. We will call on him when it needs to be replaced.
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, INSTALL | WAUKEHSA | GERMANTOWN | MAINTENANCE
David Allard
1 week ago
Laurie Kempke
1 week ago
The technician was polite and friendly. He explained the process and results. Would recommend to my friends.


“Interstate heating CO addressed my furnace problem very efficiently. They worked quickly to send a tech, get the required parts and have it replaced. Josh L did an excellent job. He was knowledgeable and efficient.”
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'- Vidya A.

“One of our thermostats stopped working. We called Interstate Heating and they quickly set up an appointment the very next day. The service man was extremely pleasant and he fixed the issue within an hour. We are grateful for Interstate Heating’s excellent service and quality! They truly respect the customer!”

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'- Mike D.

“Excellent experience … from review of current system, quote process and installation. My election for an install date for both furnaces coincided with an outdoor temperature of minus 4 degrees. All went very smoothly and the house barely cooled at all. A total of 4 installers and an electrician worked the job, and when they left there was nothing left behind for us the pick up.
Recommend Interstate highly, and I’ve been told I’m a tough guy to please.”

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'- Bart M.

“Completely happy they were able to get and install a new furnace same day. We went from no heat to new heat from a new Armstrong furnace!”

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'- Jeff L.

“Problem:furnace shutting off before achieving desired temperature.
Technician spent 30 minutes trying to repeat the problem but couldn’t. He set blower speed up a small amount to keep furnace from overheating.hopefully this solved the issue”

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'- Bob P.

“Dylan arrived as scheduled and found the problem quickly. He checked everything else and changed the filter for me . Interstate has been our go to since 1992, wouldn’t call anyone else. Excellent service!”

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'- Theresa S.

“Josh was very nice and professional. I appreciated that he responded to the service call later in the evening. I would recommend Interstate Heating.”

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'- Kim W.

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Call us at 262-246-4772!