Excellent
4.9
Diane Maniaci
13 hours ago
Another installer did shoddy work and our a/c unit developed a serious coolant leak. Our technician found and repaired the leak and serviced our system. He was friendly, helpful and prompt. A+
Jane Johnson
2 days ago
Very quick response and helpful technician. I always try to get some extra information about my HVC system and he answered all my questions.
Mary Dietrich
5 days ago
Joshua was very professional gave me very detailed information on what he was performing to my ACs. I highly recommend Joshua
Response from the owner:Hi Mary, thanks for taking the time to leave a review on Josh's recent visit to your home. We look forward to seeing you again. Interstate Heating Co., Inc Milwaukee | Brookfield | Wauwatosa | Maintenance
Julie Heyrman
6 days ago
The person answering the phone was friendly and helpful. Joe was out to our home promptly, addressed the issue, had good questions and came up with a solution. Thank you.
Response from the owner:Hi Julie, thank you for your review of Joe's visit to your home. Leaks can be worrying but we're happy to hear everything went well. Interstate Heating Co., Inc Sussex | Brookfield | Waukesha | Repair
Sue Stewart
1 week ago
We appreciated same day service on our air conditioner issue. Josh was knowledgeable, explaining our options, and not high pressure. Within an our our unit was up and running. We will definitely use Interstate Heating again!
Response from the owner:Hi Sue, thanks for taking the time to complete this review of Josh's visit to your home. We appreciate your business and your kind words. We look forward to seeing you again. Interstate Heating Co., Inc Sussex | Waukesha | Pewaukee | Repair
John and Cal were fantastic-very organized. Great people skills, tidy, systematic in everything they did beginning to end, their work seemed streamlined and impeccable, the clean-up thorough. Tom did a great job selling the process and product options, and expedited a quick installation and solution. The value proposition of a quality product seemed easy to accept when comparing g the choices. He spent time making certain I understood the details and how to explain to my husband who was working in Tennessee for the week.
Photo from customer reviewPhoto from customer review
Response from the owner:Hi Linda, Thank you for your awesome review of the techs! We are so happy we could get your install done so quickly for you. We're always a phone call away whenever you need us. Interstate Heating Co., Inc Sussex | Colgate | Menomonee Falls | Replacement
Jeff Guidinger
1 week ago
Response from the owner:Jeff, thanks for your review and for allowing us at Interstate Heating to figure out what was going on with your A/C. Dylan will have you up and running in no time. Interstate Heating Co., Inc Waukesha | Delafield | Pewaukee | Repair
Mary Clayton
1 week ago
Last weekend we had a horrible rainstorm. We got 4.8" of rain and lost power for 20 hours. When the power came on at 2:14am, exhausted we went to sleep. When we woke up the house was very warm and humid. I called Interstate Heating Sunday and left a message. Sure enough Monday bright and early we got a call. They sent a technician out same day. Josh quickly discovered it was the transformer in the furnace. It wasn't getting power. So the AC couldn't work. He fixed it so fast! We are back to normal and so greatful. Interstate has been our heating/ac for 24 yrs. Wonderful office staff, great service techs. Thank you Interstate!!
Response from the owner:Hi Mary, thank you for trusting us at Interstate Heating to get you back up and running. It's such great news that Josh got your repair done so quick for your home and got you back comfortable. We're always here when you need us. Interstate Heating Co., Inc Brookfield | Elm Grove | Wauwatosa | Repair
Steve Peters
1 week ago
Response from the owner:Steve, thanks for your 5-star review. We're happy that you were satisfied with Tristan's visit to your home. Interstate Heating Co., Inc Sussex | Colgate | Menomonee Falls | Repair


“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!