Top rated
4.9
Dale Miller
17 hours ago
Here right away. Knowledgeable. Friendly. Thorough. Couldn't ask for more.
Sandra Feller
2 days ago
Friendly and great service!
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
7 days 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


“The technician performing our quarterly maintenance was Eric. He was courteous, competent, and skillful while servicing our 3 units. I would unequivocally recommend Eric and Interstat Heating.”

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- David T.

“Josh is an exceptional technician! He is extremely thorough as well as knowledgeable. We appreciate the service he, and your company provides to your customers.”

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- Rosanne B.

“Technician T. G. was professional, knowledgeable, and efficient.
He explained everything that he was doing, what the problem was, showed me the part that was not working and replaced it.
He further explained how to best manage cooling my house in the extreme heat, Wisconsin is having this summer.”

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- Jan B.

“Answered all my questions and reassured us that what we are doing to maintain the air conditioner and the
furnace is correct. He was very knowledgeable and added additional information if we needed more clarification.”

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- Patricia S.

“We heard a ticking noise in our furnace when the blower stopped running. It sounded like it was coming from the furnace. Dylan checked the furnace as well as a supplemental cooling duct we had installed previously for an upstairs room because it was too hot during the summer. He determined that the issue is the motor on the supplemental cooling duct that is wearing out. Once we turned off the blower for the upstairs room, the ticking noise stopped.”

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- Gregg and Judy C.

“Absolutley outstanding service from Eric O! Our daughters A/C unit went out one a very hot day and Interstate sent him out that afternoon. He diagnosed the problem and had the unit back up and running. We truly appreciated his kind expertise!”

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- Tina B.

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Call us at 262-246-4772!