Excellent
4.9
Garett Lindgren
16 hours ago
Josh and Joe were very knowledgeable and friendly. Thank you
Friendly and knowledgeable
Response from the owner:Hi Dennis & Desiree, thanks for taking the time to leave us a review! Another satisfied customer is always our goal. Interstate Heating Co., Inc Sussex | Colgate | Pewaukee | Repair
steven marshall
4 days ago
Polite an efficient. Very nice to work with. Answered all of our questions.
Response from the owner:Thanks so much Steven for your review. It's always great to know our tech's are doing a great job out in the field and keeping our customers happy. Interstate Heating Co., Inc Sussex | Brookfield | Colgate | Maintenance
James Bell
4 days ago
Response from the owner:James, thanks for your 5-start review and for allowing us to take care of your HVAC needs. Interstate Heating Co., Inc Oconomowoc | Hartland | Nashotah | Repair
Tristan came out to do our annual checkup, re run a wire, and look into some issues with our A/C. He was very personable and friendly. Easy to communicate with. No issues! Tristan was very easy to work with and would recommend he come out for our next visit. Highly recommended! It was a pleasure doing business with Interstate again.
Response from the owner:Hey Michael, we really appreciate your business and you taking the time out to review Tristan's recent visit. We're glad he was able to explain everything for you to your liking. Interstate Heating Co., Inc Elm Grove | Brookfield | New Berlin | Repair
Dudley Larson
5 days ago
Always great service! It’s so incredibly nice to have a service technician and knows exactly what he’s doing!
Response from the owner:Dudley, thanks for a great review! We love to hear that our long-time customers are still happy after all this time. Interstate Heating Co., Inc New Berlin | Brookfield | Elm Grove | Maintenance
Mary Cunniff
1 week ago
Response from the owner:Mary, thanks for your review! We appreciate your business and trust in us to handle your HVAC needs. Interstate Heating Co., Inc Hartland | Merton | Oconomowoc | Repair
Derek Deubel
1 week ago
Chris always does a good job.
Response from the owner:Derek, Thanks for taking the time to leave a review of Chris' visit to your home. We truly value our long-time customers and are glad to know you still think we're 5-star service. Interstate Heating Co., Inc Hartland | Wales | Sussex | Maintenance
Hernan Tocuyo
2 weeks ago
Good Service
Response from the owner:Hernan, Thanks for your fast review! We're so glad Chris quickly found the issue and got it repaired for you. We will see you soon for that spring maintenance. Interstate Heating Co. Inc, Pewaukee | Brookfield | Delafield | Repair
Diane C
2 weeks ago
Tristan arrived at scheduled time and did a thorough inspection and testing of furnace (after some basement flooding). Excellent service!
Response from the owner:Hi Diane, Thanks for your 5-star review. We're so happy Tristan gave you excellent service and was able to make sure your furnace was functioning properly after unfortunate flooding. Interstate Heating Co., Inc Milwaukee | Glendale | Mequon | Maintenance


“My remodeled barn I use for an office was 43degrees when I went out to work at 6:45 AM. I called Interstate at start of business at 7:30 AM. Their technician Eric Osterman arrived before 10:00 AM and the furnace was back on line in around an hour. Eric was a total professional and took care of everything. Overall I was extremely satisfied by the friendly, professional support.”
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'- Jerry W.

“Superior service on so many levels!
First of all, I was dissatisfied with the company that installed my furnace (in 2018) but needed someone to address an issue that recently arose. I chose Interstate based on the recommendation of a friend and, after was said and done, I was not disappointed.
The first service call revealed that the furnace was, internally, really dirty. Yes, I do regularly clean the furnace filters, but the camera showed that more was REALLY needed. The first serviceman did an amazing job righting this problem, but warned me that replacement might be needed if the furnace cleaning didn’t remedy the issue.
Well, the problem continued so, the following week, I called again. To make a long story short, called at 8 AM . . . serviceman arrived at Noon . . . replaced faulty part . . . and was out the door by 1:00. No service charge, on the second visit, and part had a 50% discount because of furnace warranty. GREAT SERVICE!!!
I did learn something, from this adventure, and that is duct cleaning may have prevented this.
I already have made an appointment, for that service. (I asked Interstate if they could recommend anyone and they supplied me with the name of someone they found reliable.)
VERY HAPPY WITH INTERSTATE’S SERVICE!!”

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'- Claire M.

“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.

Need HVAC Service?

Contact the experts at Interstate Heating Co..

Call us at 262-246-4772!