Karl Fritchen
23:08 25 Jun 25
We came back from out of town last night and our house was over 80 degrees. Jake came out this afternoon and changed the capacitor and recharged the system and we are back enjoying the cool home tonight! Jake was very courteous and explained everything to us very clearly. He was a pleasure to work with and the staff at the office was awesome squeezing us in today! Thanks!!!
Cathleen Esselstyn
20:39 25 Jun 25
My air conditioner broke during this extremely hot spell. Interstate came out in a timely manner. Dylan was on time, polite, knowledgable & explained services and options, and fixed the problem. I've been with Interstate Heating and Cooling for 28 years.
Marnie Omer
19:21 25 Jun 25
Chris was excellent. He was efficient and very tidy. Thank you Chris for getting our AC running effectively again!
Larry Brand
18:17 25 Jun 25
Jake is awesome to work with. He is very positive, persistent and methodical.
Scott Larson
19:54 24 Jun 25
6/24/25 ..The technician's/Pauly Scott, were excellent on the installation of the air-conditioner and explaining everything to me and assisting me with the control unit/Nest system. I'd recommend using Interstate since every time I've had technician's come to my home they have been excellent.Scott Larson
John Schwitz
16:02 24 Jun 25
Technician was very friendly and knowledgeable. Was very thorough and explained everything he was doing and showed me the results from all the tests he had done. I would recommend Interstate Heating to anyone needing service.
Mary W
14:03 24 Jun 25
Interstate Heating and Eric get 5 stars from us. My elderly mother's central air went out just before a heat wave. Eric was able to get a quote written same day, I signed it on a Saturday and by Monday morning the crew was installing the unit. 8 hours later the house was back to 72 degrees. The heat wave rages on and we already have the new unit. Great service and great crew. We are very pleased with the work done and recommend anyone work with Eric and Interstate Heating.
E.W.
12:39 24 Jun 25
Josh is the man! Our house is cool again. Couldn’t be happier with our service. Thank you!
Trisha Stahl
18:31 23 Jun 25
Jake was professional, kind and intelligent. Air conditioning went out during the hottest day and they fit us in same day. Had everything running again in less than a hour.
rick Palmtag
18:01 23 Jun 25
william Liebl
14:40 23 Jun 25
Michael Frazier
13:33 23 Jun 25
Denise Wallace
22:07 20 Jun 25
Tristan was my service technician and he did a wonderful job. I have the 2 year/4 inspection service package. Tristan was very professional and personable and explained everything that needed to be done to keep my somewhat old air conditioner running for the season. I highly recommend Interstate Heating Co., Inc.
Beatriz Cirera
14:10 20 Jun 25
RDR .Lepkowski
18:09 19 Jun 25
The service tech was very informative and thorough when servicing the air conditioner. Would recommend interstate for an install or service.
Douglas Jacobson
20:42 18 Jun 25
Scott Schumann
14:39 18 Jun 25
Cindi Vetter
15:09 17 Jun 25
Such friendly, competent, and hard working gentlemen! I’m so glad someone referred me to them. Will continue to use them for sure!
Gary Puestow
21:30 13 Jun 25
Patti Sprague
21:00 13 Jun 25
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.
Rachel Detert
20:57 13 Jun 25
Great service, very professional. Maintenance program has excellent value and has found issues before they become larger problems and promptly fixed.
ecsdigital2112
15:51 13 Jun 25
Service guys were very helpful. The answered all my questions and explained every process that pertained to my situation.
jan mueller
17:55 12 Jun 25
Erich did a great job. Explained everything very conscientious, clean and efficient. Very knowledgeable about the product. Great job.
Robert Pierce
14:50 11 Jun 25
The kind of person I would like on my team Jash
David Carpenter
17:11 09 Jun 25
Josh does a great job. Listens to concerns and addresses them in a systematic manner. He has serviced our HVAC more than once and would welcome him back.
Dean Oswald
22:48 06 Jun 25
Had equipment needed and did a thorough inspection and was very courteous.
Mike (Mike 'Nerds' Neldner)
21:02 05 Jun 25
First time customer, very impressed with the level of service, knowledge, and professionalism of Interstate's technicians. From the first phone call to get scheduled, and through the service call at our home, they were helpful, informative, and helped me get the feel for what we had for options on resolving our hvac needs.I'll be a returning customer, that's for certain. Keep up the great work!
Deborah Kravit
18:58 05 Jun 25
Very professional and knowledgeable technicians
Fred Kinateder
13:51 05 Jun 25
Josh did a great job. I was very satisfied with the service. He also gave me some suggestions as to my options for repair or replacement.
Michael Honisch
21:16 04 Jun 25
Great job by all technicians we've met over the past year, after leaving our previous recently sold VERY long-term HVAC contractor
Holly Nelson
14:15 04 Jun 25
Interstate does a great job servicing all our needs. Highly recommend.
Raymond Riemersma
18:44 30 May 25
GreatHe did a good job
Mindy Lloyd-Noel
18:15 30 May 25
Eric is the best!!! I will specifically ask for him for all my services. He’s so nice, and knowledgeable! This business is lucky to have him.
Tom Adler
14:15 30 May 25
Both Tristan and Alberto were great! On time, conscientious and focused on service. Clearly explained what they were doing to do and what was found. Efficient.
john seipel
15:00 28 May 25
Tristen and Alberto were amazing Techs…informative and caring and happy…which is very rare these days so I believe it’s precious!!
Kevin Webb
20:39 27 May 25
Honest advice!
Michael Urban
16:43 23 May 25
Great professionalism and communication from Tristan and Alberto.
Harold Krueger
15:31 23 May 25
Chris was conscientious in performing his work and kindly instructed me in the programming of our new thermostat. I have engaged Interstate for years and will continue to do so.
Michael Clark
14:47 22 May 25
Technician was friendly and professional. Answered all my questions!
Cheryl Milbauer
18:26 21 May 25
I have been thoroughly impressed with each person I have worked with at Interstate - office, sales, techs - everyone is focused on fixing your problem and offering solutions. I recently pivoted away from a mini-split unit to an upgraded sensor to solve an issue I have been having. Would recommend Interstate to anyone looking to partner with a HVAC provider.
Michael Zimmer
16:55 19 May 25
Eric was highly knowledgeable, friendly and thoroughly answered all of our questions. Will use Interstate again
Mary Clayton
13:54 19 May 25
We decided to replace our AC unit as it was 28 yrs old. Never had a problem, but time was not on our side. We called Interstate and everything went very smoothly. Installed in just a few hours. They did a great job. Highly recommend. They have been our go to guys for over 20 yrs. Very respectful of our needs and property!
MaryBeth Haugen
01:38 17 May 25
David Misorski
17:59 15 May 25
Very professional and courteous service.
Gina Woida
23:46 14 May 25
Prompt, communicated arrival time, explained what they found and what they repaired. Very efficient, very friendly.
Joanne Feypel
00:39 14 May 25
I had this company come in to check and clean my air conditioner. Did a beautiful job . It was dirty due to construction in our subdivision. He let me know what to watch for in my furnace for future problems. When that happens I will call them back.
Ross Read
19:29 13 May 25
Mark Treadaway
13:22 12 May 25
Efficient, polite, and professional
Richard Bauch
17:12 09 May 25
Christopher Mertens
23:29 02 May 25
Great service, troubleshot through some unexpected problems and kept me informed the whole time with what options we had. Appreciate Josh's work with us!
Amy Krenke
16:20 02 May 25
Great service, great techs. Very happy working with Interstate.
Carol Hemmingsen-Scheller
13:01 01 May 25
Red Rose Dentistry
18:07 30 Apr 25
He was very efficient, helpful, knowledgeable and timely. Thank you!
Keith Redding
13:03 30 Apr 25
don mantz
19:44 29 Apr 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.
Thomas Weghorst
17:44 25 Apr 25
Great tech...explained everything very well and was very thorough.
Art Jaehnke
19:35 18 Apr 25
William Wright
18:14 18 Apr 25
Very receptive to our needs. Excellent work and very honest. They have the best service and personnel in the entire area.
Juliet Mock
09:45 18 Apr 25
Chris C was awesome! So very kind, and efficient. He explained things well and was very professional. Really appreciated the quick response to the online inquiry, ease of scheduling and professionalism of all the team members we had interactions with. We will definitely use their services again when needed.
John Warczak
01:55 15 Apr 25
Eric, Interstate's service tech, did an excellent job. He was personable, professional, efficient and clearly explained what was done.
Sanjay Singh
23:09 11 Apr 25
The team at Interstate at Sussex has been outstanding for all the 3 years that I have availed their services. From the initial phone experience for scheduling, contract information and upfront capabilities - to when they come over for emergency or scheduled maintenance. Thy will even call you to remind that your prepaid service is due!The technical staff is excellent. Josh has been exceptional in intelligent diagnostics, addressing your queries and going over your system meticulously to give reasonable solutions without pushing spares or replacements, when you know you don't need them!I would recommend them wholeheartedly for all planned service contracts as well as emergency needs.Kudos and keep it up!
Drew Hietpas
12:53 11 Apr 25
Wayne Bernhardt
19:08 10 Apr 25
Both guys were polite and did a good job. Thank you.Wayne Bernhardt
Joel Anders
13:17 10 Apr 25
Interstate did a great job after a lightning strike hit our house diagnosing the problem. Technician Eric returned timely with the needed parts and completed the job.
Ronald Troy
20:17 09 Apr 25
Ethan and Kevin already do a great job - very reliable, responsible, and knows the equipment.
Florence de Leon
03:26 08 Apr 25
Gregg Bergin
21:35 31 Mar 25
Josh my installer was great. He installed my new Carrier Thermostat in quick order, and explained everything in easy to understand directions. My new thermostat plays nice now with my Aprilaire whole house humidifier. The Carrier app seems to be pretty easy to understand as well.
Lori Talb
19:08 31 Mar 25
LINDA KARL
20:28 28 Mar 25
I was very impressed with Lukes job well done. He deserves above (and beyond 5 stars. 10 stars instead of 5) for an exceptional job well done. Luke went out of his way to make sure all issues were taken care of in a timely manner. Thanks Luke!
John Wahlen
19:27 28 Mar 25
Chris rocks
Gary Bennetts
00:38 28 Mar 25
On time as scheduled, honest, and did a great job
Matt Janke
20:15 27 Mar 25
Being out of town while having heating issues, Josh was awesome at identifying the issues, fixing them and just making everything run more efficiently. He was also really great at communicating with us. Great service from everyone at Interstate!
Kevin Powalisz
13:29 27 Mar 25
Outstanding service!Chris and Josh both followed up to make sure everything was working properly.Would highly recommend. This is a company that cares!
Danny Cull
12:18 27 Mar 25
Interstate was a pleasure to work with. My furnace went out and the next day they came in and installed. Very professional friendly install team, very fair pricing on the unit. Would highly recommend them and will continue to use them for service at my home.
Carol Brook
21:31 24 Mar 25
Knowledgeable , friendly and did a great job job. Would definitely recommend your company to others.
Kevin Klingbeil
20:27 18 Mar 25
Quick response time. Eric was Honest, Understanding and took the time to Thoroughly answer all of my questions on go forward options!Highly recommend!!
Brad Kollath
18:41 18 Mar 25
Randy Breske
10:40 14 Mar 25
Great quality, very professional and knowledgeable service technicians, great respect for our property
Michael
19:26 12 Mar 25
They installed my hydronic heating system and hot water system in 2007. I've used them for 18 years to do all the repairs and maintenance. They are always professional and til notch.
Tyler Faber
18:43 10 Mar 25
I recently had the pleasure of working with Interstate Heating, and I can’t say enough great things about their service! From the moment I called, their team was professional, friendly, and incredibly knowledgeable. They took the time to understand my heating issues and scheduled an appointment quickly.The technician arrived on time, was courteous, and explained everything in detail before starting the work. It was clear they were experienced and genuinely cared about doing the job right. My heating system was up and running efficiently in no time, and they even provided helpful maintenance tips to keep it in top shape.Interstate Heating exceeded my expectations in every way—fair pricing, top-notch customer service, and expert workmanship. I highly recommend them to anyone in need of heating services. They’ve definitely earned a lifelong customer!
Linda Hrdina
17:09 10 Mar 25
Eric notified me in advance of his arrival. He was very helpful in identifying a noise in the ductwork and a solution to fix it. Eric was polite and professional. I would definitely recommend Eric and Interstate Heating.
Mike Nast
16:45 06 Mar 25
On time and very friendly. Technician Josh did a great job, very professional and knowledgable
Rick Noe
15:39 05 Mar 25
Eric is incredibly knowledgeable, doesn’t mess around and gets things done better than any HVAC person I have ever dealt with! He’s a real gem for Interstate and will keep me coming back for products and service. THSNKS ERIC & INTERSTATE!
Dean Maytag
17:53 03 Mar 25
Excellent, the technician (Josh) was very knowledgeable and personable. Did a thorough examination of our furnace. In addition, he came with a mask at our request and wore booties to protect or carpet. Much appreciated!
Dennis Herricks
20:26 26 Feb 25
Bill Kuckuk
19:54 25 Feb 25
Our furnace stopped working. I called Interstate and they were able to schedule service for the same day. Josh showed up in a couple of hours, quickly diagnosed the problem and had the parts in his van. Fast, efficient and friendly. That's the good news. The bad news is this is the second time in 6 years that our new Carrier system has failed. Luckily the parts were covered by warranty, but the trip charge and installation labor are not. Bottom line...happy with Interstate, not happy with Carrier.
Bill & Diane Kuckuk
00:43 25 Feb 25
While I’m not happy at all that my Carrier A/C failed after only 5 years, leaking out $500 of refrigerant and requiring another $500 in labor to repair, I couldn’t be happier with Ethan as our technician. He explained everything he was going to do, how much it was going to cost and was very polite and respectful. I would definitely call Interstate for future HVAC needs, but I can’t say I would choose Carrier again.
Mark Shandley
23:54 24 Feb 25
Great service. Quick to resolve problem. Great crew. Good product.
Fred & Jane Lawler
21:34 21 Feb 25
Guys we’re very professional
thebigcucumber
16:21 21 Feb 25
very polite and knowledgeable, easy to talk to.
zak badani
18:28 20 Feb 25
Down to earth people to work with. They will check if parts are covered under Warranty or recalled.
Katie Bosbous
17:45 20 Feb 25
Eric Osterman was fantastic. Very personable and kind. Knowledgeable as well! Thank you!
sarah Schmidt
13:22 18 Feb 25
Friendly Fast service!
Randy DeLaura
23:00 14 Feb 25
James Schroeder
19:28 14 Feb 25
Excellent experience. Eric was very professional and knew his stuff.
Fidel Mangwiza
22:02 13 Feb 25
Eric was great to work with. He is very knowledgeable and he explained what he was doing, and why he was doing it. I was very impressed by his professionalism and great customer service. Thank You Eric!!
rick fricker
17:33 13 Feb 25
Very good repair man excellent service
“Josh is the best. No one works harder. Our house is old and there have been multiple add-on HVAC units along the way. It is complicated and we've had numerous issues along the way. He is great about informing us what is going on and working to resolve any problem.”
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- Bryan H.
“Jake was out early and got our unit repaired on one of the hottest days of the year. He recommended a replacement unit as ours is over 30 years old. He'll be back to replace.”
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- Mike B.
“Eric does the semi-annual maintenance on our furnace. He is always on time and gets the job done professionally and thoroughly. He’s always happy to explain what he’s done on each visit and give us tips on what we need to do to help our furnace run at maximum efficiency.
Eric brings years of experience to the job and it shows in the high quality of his work.”
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- Sheila B.
“Josh did an awesome job finding out what the problem was with our equipment. Very thorough when trying to find out what was wrong with our system.
Ordered the parts and repaired the system. Very knowledgeable, Respectful and professional. Answered all of my questions and gave me some helpful hints regarding our units. I was very pleased with Josh and Jake. I would definitely request these technicians for future work.”
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- Barb E.
“The two service technician, Tristan and Besto performed a seasonal service check-out before summer usage. They were excellent and provided me key information about my air-condition unit, filter, and brought to my attention the two vents in the storage room that we were not even aware of since we just moved into the home in late December. I'll be sure to use them again if anything would go wrong and/or for regular service maintenance and request the same two technicians.”
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- Scott C.
“Chris was on time and efficient, found the problem quickly and got the heat back on.”
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- Kevin A.
“Jason arrived early, worked efficiently. Replaced old central AC with new two stage system. Very professional and courteous.”
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- Michael C.
“Great overall experience. Appreciated the text reminders and notice that tech was on his way. Chris took the time to explain the issue in detail.”
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- Cheryl K.
“Josh did a great job pinpointing the issue with our geothermal system. He provided a workaround solution to keep the system running until the replacement part is available.”
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- Doug F.