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.


“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.

“As he has done for the last 4 years, the new furnace has been installed. A GREAT & professional service. I will call for him next year. Thank you for the service.”

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'- Floyd G.

“Called, and had technician (Dylan Scherer) arrive that same afternoon.
He was courteous, friendly and knowledgeable on the service request.

We had Interstate install both our Air Conditioning unit, and Furnace.
Both the Installation and now the service were handled quickly and efficiently.
Dylan did a great job!”

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'- Patrick K.

“This company was fantastic! I called the company they sent someone out for an estimate the next day. And my central air was installed within a week of my initial call. They were very nice and cleaned up well after they were done. The price was also lower than the other companies I called. Would definitely recommend them!”

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'- Donna D.

“Friendly customer service experience when calling. We needed a service call for our AC not working. Thankfully, there was an opening same day and our service tech, Josh, was very kind and explained the problem and how it was going to be repaired.”

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'- Lyn M.

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Call us at 262-246-4772!