John Mangold
22:51 02 Feb 26
Eric did a complete checkup and identified the issues in a timely fashion. Would recommend Eric and the company for any other needed repairs or purchasers.
Bill Hansen
19:21 02 Feb 26
Technician was on time and thorough. Very bright and articulate. A great ambassador to your organization. Thank you Tristen!
Kurt Anderson
18:37 02 Feb 26
Timely and reasonable.
Jennifer Thompson
15:32 02 Feb 26
Lori Burke
14:56 01 Feb 26
R M
22:23 29 Jan 26
We had a new furnace with a bad gasket, causing water to leak beneath the unit, and rust inside it as well. Tristan was courteous, helpful, prompt, and friendly. We could tell that he cared a lot about getting the job done right, and he patiently answered all our questions. Great service and great technician.
Brett M
19:19 27 Jan 26
Emergency call for no heat was responded to Very Quickly. Thank you Ellen.
Gary McMurray
19:54 26 Jan 26
Very knowledgeable and exhibited a true understanding of the problem.
Jill Sweitzer
15:45 26 Jan 26
Todd Mueller
00:52 24 Jan 26
Our furnace stopped working and they sent their technician. He found out that the gas value was bad and he replaced it. It worked. We were very satisfied.
Jeff Lombardi
22:36 23 Jan 26
Very competent and professional Technician - Dylan. He was courteous, professional and diligent while diagnosing a furnace issue at my home. Albeit, he gave me bad news that I needed a replacement he provided options and solutions to my problem.Very professional staff from my initial phone call to the visit and estimate.I highly recommend this professional HVAC business for your personal needs.Jeff
Neil W Holaday
19:30 23 Jan 26
The technician was great and very knowledgeable. Everything went well.
Brittney
18:24 23 Jan 26
Keith Nettesheim
17:39 23 Jan 26
Very helpful and explained everything in great detail. Thank you!Keith
Michael Schneider
18:52 22 Jan 26
Very good service tech, explained the details of the heating system functions. Very fast and knowledgeable. He even fixed a wiring error from original installation. Highly recommend.
Kenneth Romeis
15:13 22 Jan 26
Dylan showed up on time and ready to work. Excellent customer interface and patience. I had questions and Dylan had answers. He took the time to answer all my questions. Not only was he knowledgeable, he is a genuinely nice and sincere person.
james jarrett
05:05 22 Jan 26
Eric was very professional and he knew just what he needed to do and did it very well and since I was a electrical contractor for many years he would be the type of person that I would want working for me
Bob Mikulec
22:43 21 Jan 26
My Interstate Heating technician, Tristan, did a great job and answered all my questions about maintenance, condition and age of equipment, and operation of my smart thermostat.
dana gilboy
21:44 20 Jan 26
Great service from Interstate! Tristan performed standard furnace check and maintenance. Very professional and informative.
The service technician was very friendly, answered all my questions and made good recommendations.
Carrie Jaskaniec
13:50 17 Jan 26
Tristan was on time, friendly, helpful, cleaned up when finished and I would highly recommend him as a technician!
Joseph Bingen
21:21 15 Jan 26
Dillon was prompt, courteous and worked at correcting thingd
Patti Sprague
18:38 15 Jan 26
Eric was professional and he was quick and honest. Seeing that my furnace is 38 years old I'm sure it's time for a new one and that's exactly what he told me.
Tara Salaks
15:04 15 Jan 26
Very fast and great customer service. Chris is great!
G Schmeling
20:41 14 Jan 26
Highly recommend. Have used them for 30+ years
Tom Gruenke
12:38 14 Jan 26
JK
00:59 14 Jan 26
Tristan did a thorough job maintaining my furnace. During the routine maintenance, he discovered an issue with the furnace inducer motor (bad bearing) and worked with me to file the warranty claim. Thanks for the great service, Tristan! Now my furnace is running in tip top shape again.
Elaine Hills
14:51 07 Jan 26
Last Thursday Eric, the Interstate technician, was at my home for the annual furnace check-up. He discovered a failed inducer, which he explained would result in zero heat. He also found two zone dampers that were making noises indicating failure was coming soon. Eric explained how the dampers work and why they are needed as well for adequate, even heating throughout the home. He ordered the needed parts and less than a week later all parts are replaced and everything is in perfect working order for another Wisconsin winter season. The professionalism, knowledge and promptness with Interstate Heating is at the highest level. I have never been disappointed.
Linda Pitts
01:44 07 Jan 26
Dylan was prompt and very professional!!!! Great young man!!!!
Susan Haramaras
15:54 06 Jan 26
Josh arrived as scheduled. He explained everything. He was knowledgeable and efficient and completed the job to our satisfaction.
Chris or Beth Peske
14:59 06 Jan 26
Excellent service. Tristan was thorough, professional and informative.
1neilandkaren
21:00 02 Jan 26
⭐⭐⭐⭐⭐I called the morning after a holiday and Matthew was very helpful in getting us the support we needed. Chris arrived a little early and quickly diagnosed the issues with both our boiler and furnace. He was polite, knowledgeable, efficient, and cleaned up after finishing the work.We’ve worked with Interstate Heating multiple times, and they are always responsive and helpful—from the office staff to the technicians. They are honest and genuinely want what’s best for their customers. Highly recommend!
Karl Fritchen
17:51 02 Jan 26
Tristan did an awesome job! He communicated well about when he was going to arrive and then called me after the visit to outline what he had done and the costs related to it. Very positive experience and very professional technician.
Kathy Kowalski
00:01 01 Jan 26
Excellent prompt service.Technician found the issue quickly!
Harry Aghjian
17:26 31 Dec 25
Great service tech and solved the issue quickly… Tristen was awesome!
Julie Offutt
16:58 31 Dec 25
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
Melody Ruhbusch
17:13 26 Dec 25
Considering this was the day after Christmas we were grateful that Jason was available to assist us with our problem. He was very friendly and informative. Explained our options without any pressure.
Phil Prange
19:27 23 Dec 25
The technician arrived early. He was clean, courteous, and competent.My heating issue was resolved quickly and explained well.Can't say enough good things about Interstate and their service team.Chris was excellent.Thank you
Joanne Nolde
21:17 22 Dec 25
Antonio and his team installed a new furnace. They were knowledgeable, on task, and efficient in removing the old furnace, replacing the new one, and cleaning up before leaving. They were friendly, polite, and articulate in explaining what they were doing and answering my questions. I would definitely recommend them to others.
Karen Wright
20:20 18 Dec 25
I trust Interstate Heating. We have used them for27 years. Tristen was very thorough and figured out why were not getting heat in our bedroom.It all boiled down to a small part that had to be replaced. He was very diligent in finding the problem. He was great!!!! He also explained everything to me.A big thank you to Tristen
Bubba John
15:05 18 Dec 25
Eric installed a Aprilaire humidifier for us. He did a great job and we are very happy with it. The service was awesome and we highly recommend Interstate Heating.
Kathy miller
14:26 18 Dec 25
technicians showed up on time, laid down cloth on the traffic patten to the basement as it was a messy, sloppy day. stated it would be about a 4 hour install which was pretty accurate. afterwords they cleaned up everything and could not even tell they were here.
Tom Gannon
20:31 17 Dec 25
Eric does a great job. He is extremely knowledgeable and is an excellent communicator.
Harry Clayton
16:42 17 Dec 25
On-time and worked clean and efficiently.The garage heater Turned out better than I anticipated!
Kathy Greb
20:11 16 Dec 25
Chris completed annual maintenance on my furnace and humidifier. Very efficient, pleasant and answered all my questions.
Jack B
20:02 16 Dec 25
Chris did our furnace maintenance today. He answered all of my questions and provided good suggestions for moving forward.
david carlson
19:54 16 Dec 25
Tristan did a great job. He explained everything thoroughly. He was extremely polite.
Pedro Pierri
17:51 16 Dec 25
Furnace gave out after 15 years in one of the coldest days of the year. Interstate Heating was able to expedite the repair, get the part that was not readily available and complete the repair it on the same day. We have heat again! The technician that came in, Dylan, did an excellent job in repairing the problem and explaining what happened, how he was going to fix it and I even learned something new. I highly recommend their services.
Mary Lou Moths
01:02 16 Dec 25
ETHAN Lipski is a great employee. He is polite, respectful, and efficient. He takes time to answer my questions. 5 srars, for sure!
SANDRA ROBACK
21:14 15 Dec 25
Wonderful team- customer service (Mathew) and their service technician Eric were both outstanding to work with. Eric's knowledge and his ability to get our furnace working in matter of 1.5!!
LBRC Account
17:39 15 Dec 25
The service was quick and efficient. They always provide top tier service. They are my definition of being very professional. Highly recommended.
Kurt Farrell
13:56 14 Dec 25
Our boiler went out on one of the coldest days yet in 2025. I called Interstate Heating because they were a dealer for Buterus, the brand of boiler that we were using. I promptly received a call back from Tristan Garland who was on-call for the weekend who professional and courteous. We walked through a few diagnostics and Tristan quickly came to the conclusion the the ignitor was probably the culprit for the boiler not starting up. Within the hour Tristan has procured the parts from his shop and was at our house installing the parts. Within 30 minutes all was back up and running and we had heat!He was professional and I would recommend him and Interstate for all your HVAC needs.Thanks Tristan!
Ruth Hau
12:01 13 Dec 25
Great job, Scott was on time and very professional.
Jim Sawyer
23:06 10 Dec 25
Tristan was able to explain exactly what was needed and provided a very thorough service of our furnace. I would highly recommend them and will continue to use them for our Hvac system.
James Long
21:30 10 Dec 25
Courtesy, knowledgeable, explained what he was going to do and reviewed with me what he did
J W
23:55 09 Dec 25
Tristan was highly knowledgeable and courteous. Possesses a high skill level, superior troubleshooting abilities and checked multiple system functions with various diagnostic tools. Went above and beyond to make sure everything was running properly. Great customer service throughout too.
mark waraksa
20:58 09 Dec 25
Nice gentlemen came to help me on the thermostat
Jim Wollin
20:53 09 Dec 25
Excellent service knowledgeable polite, service done in timely fashion. Would recommend him and his partner
Susan Eng
00:30 06 Dec 25
The pro did an excellent job of diagnosing the problem with my furnace.Im not happy with the warranty on the furnace, the furnace is only a little over one year old and the Carrier warranty only covered the cost of parts and not the labor which was $489.55! It seems a warranty should be better than this for a relatively new furnace. Also it seems that the problem with the furnace is one that occurs frequently and may occur again. It seems to me that the thermostat recommended by your company from the furnace company has more issues than my Nest thermostat which governs my other furnace just fine. If I require further service, i think changing the thermostat seems to be a better plan!
Chip Losee
20:26 05 Dec 25
Very satisfied, Tristan was awesome. Very professional and knowledgeable.
Amy De La Cerda
20:04 05 Dec 25
Interstate was amazing. From the empathy and friendly manner my initial call was handled, to the thorough way Eric explained what was happening, to our install, everyone was super polite, respectful, and did great job. Victor and his partner for the install laid down tarps and wore shoe covers to keep the pathway clean and even took extra steps to clean up the rust stains on the floor from the old unit. They also took the time to help us get familiar with our new thermostat.
Diane Zore
17:55 05 Dec 25
Tristan was here and fixed the issue, was professional and competent. We have been customers for over 25 years and rely on your company to always do your best!
Joseph Otu
02:10 05 Dec 25
Eric was very knowledgeable, detailed, and professional. He explained what was wrong and what he did. I was very pleased.
Kathleen Dubiel
02:04 05 Dec 25
All was pleasant. I did pay cash and without receiving a receipt felt odd but was sent the reciept via email!
Sally Fritz
21:29 04 Dec 25
We’re very grateful that the 2 gentlemen pursued the problem since of course when they got here the furnace appeared fine! They found a large birds nest in the intake pipe!Very happy with their service!
keepSmiling
23:13 03 Dec 25
Joy Stein
15:45 03 Dec 25
Diane Brunclik
22:35 02 Dec 25
Austin was courteous and professional
Maggie Schroeder
14:33 02 Dec 25
Very prompt, explained everything.Trust them.
Terry Flanagan
23:56 26 Nov 25
Our service technician was very detailed oriented and kept us informed at every step of what he was doing and his findings. Excellent service !
Bob Kachelek
01:30 26 Nov 25
Very friendly, explained everything he was doing. Knowledgeable and gave us good maintenance tips on our furnace and AC.
Gerardo Caballero
17:55 25 Nov 25
John Beauchamp
00:20 25 Nov 25
Eric did an excellent job in diagnosing and repairing the HVAC unit. Thank you for the great service!
Nicole Smith
22:03 24 Nov 25
Tyler was very knowledgeable and polite when doing regular maintenance on my furnace today. Great job!
Melissa Murray
21:35 22 Nov 25
Tristan was professional, courteous, efficient, and honest. He explained things to me in terms that were easy to understand and did not try to sell me things that I didn’t need. I would welcome him in my home again to service our heating and cooling system.
Julie T-V
20:32 21 Nov 25
They were neat, on time and fantastic to work with!
Carlene Wade
13:19 21 Nov 25
Great customer service!! Antonio was very professional and they did an awesome job. Cleaned up very well after they finished. We are very pleased!!
mary muntner
22:05 19 Nov 25
Trysten was very professional and knowledgeable. He was very pleasant and obliging. I would certainly like to have him do the work I have when i am ready. He is definitely an asset to Interstate.
Geri Gerschke
18:50 14 Nov 25
These guys are SO helpful and efficient and respectful.
anthony corrao
16:58 14 Nov 25
Tristin was very thorough and professional!
Christine Jahncke
15:32 14 Nov 25
Josh did an excellent job diagnosing the worn out part on my furnace and was great communicating with me during the repair. Thanks Josh for all your hard work and for making my home nice and warm again!
Wayne & Mary Jo Koch
00:48 13 Nov 25
Josh did his always excellent job on our biennial furnace check up.
Dave Goss
19:57 10 Nov 25
Josh from Interstate Heating did a very thorough job of investigating why our furnace stopped working in the middle of the night. He did have to order a new part and will return tomorrow afternoon to install it.He checked a number of things on the furnace to make sure everything was working correctly!
Leon Saryan
18:40 10 Nov 25
Efficient
Michael Cieslewicz
21:30 07 Nov 25
Dylan has provided service to us one previous time. He is always courteous, efficient and knowledgeable.
Craig Hurst
19:58 07 Nov 25
Interstate has been servicing our HVAC for several years. The technicians are always courteous and professional.
michael phillips
17:44 07 Nov 25
very polite and was able to correct our condensate pump problem
Kath Swanson
23:41 04 Nov 25
Josh is an excellent technician. He is prompt, polite, competent, and explains the services and/ or fixes clearly.
don mantz
15:04 04 Nov 25
Eric Osterman is always a pleasure to work with. He knows the heating business and communicates well. He completes the project in a professional manner and reviews what he did with us. Top member of your team.
gwen medved
19:34 03 Nov 25
Justin was great! We have worked w Interstate for multiple properties for over 20 years. Per usual, great service, very informative, did HVAC maintenance, replaced filter, checked C02 levels and checked my equipment on main floor as well. Looking forward to my UV light, air purification and dehumidifier being installed next week!
Jim Quinlan
14:45 31 Oct 25
Job completed quickly and professionally
John Heinrich
23:05 29 Oct 25
Greg Lutz
20:53 28 Oct 25
Josh is amazing. He is always able to figure out what is going on and I never feel like he is trying to sell me something I don’t need. It’s great to have that trust and confidence. And, he is a really good man who cares.
Katie Knudsen
14:09 28 Oct 25
Excellent service. On time with great communication on arrival time. In addition to annual furnace maintenance - a humidifier was added. I was very happy with the installation!
David Smith
21:55 27 Oct 25
Great
Next Reviews
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“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.

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Call us at 262-246-4772!