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


“Eric was my service tech and he was great. Fixed my problem in minutes and gave me helpful tips for the future. His service was an A+++. Everyone I dealt with on the phone was extremely nice as well. I will definitely be calling Interstate Heating for all my needs.”

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'- Linda K.

“Workers were competent and professional. They did, however, leave something undone near the air conditioner. They did return promptly and resolve the issue.”

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'- michael J.

“Interstate Heating was a lifesaver this morning (10/16/24). They were very responsive to my needs (that started the late day before).

My situation was this, I had a local company into my home for a furnace cleaning and tune-up (because I had a discount coupon for the work). They arrived at 2:00 pm. After 2.5 hours they completed their work (I’m assuming it took that long because the lead technician had a “trainee” with them. The reason I am assuming that is that every time I went to observe the lead technician was providing direction to the trainee). At the end of the work, I was informed that my Carrier variable speed inducer assembly had failed during a performance test ( I had no idea what that statement exactly meant). Once I had been given that information I was also informed that to improve the performance of my equipment I may need to replace the system’s motherboard as well as move the intake piping from above the gas valve (I didn’t tell the technician one of their associate technician’s had also made that comment two years earlier….no change in condition). All combined the quote was close to $1,500. But that wasn’t the most significant fact. When the technician told me there was equipment failure they didn’t indicate positively that the furnace won’t work due to that component failure. This was at 4:30 pm….which meant it was too late to make a decision about what I was going to do….which meant no heat for the evening. An acceptable ending to this part of the story is my wife and I survived a below-freezing evening in our house!

In the morning, I called Interstate at 8:00 am (I put my information into them both on their website and through their chatbot the evening before). When Ellen answered the phone she had already viewed my input from the previous night. She was very conversant with my situation. We had a longer conversation about my needs and she then directed me toward their appointment scheduler. Within approximately 30 minutes Jessica called to tell me there was a technician in my area that would be available late morning.

Casey arrived at approximately 10:30 am. He would have been at my home earlier but he had to go pick up the parts from the Interstate location. He was able to pretty quickly assess and repair the equipment. The inducer assembly was the only component replaced. Both the motherboard and piping were deemed a “non-issue” so were not included in the repair. The original quote for just the inducer assembly replacement was approx. $500. My payment to Interstate (with the trip charge….which did not include the “go get” parts run that Casey had to do before arriving) was less than $215 (which was over a $250 savings…..).

Casey was highly professional, very timely, very courteous, and a pleasure to work with.

I will continue to be a loyal customer of Interstate (they installed the furnace in 2015 and our AC equipment in 2023) going forward. And will try to restrain wanderings to other company’s because of their “good deals”. I have learned my lesson.”

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'- Mark K.

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