Ian and Lucas were such great young men. Pleasant, professional and neat. Appreciated their work and honesty

Damyon was knowledgeable and very friendly. He fixed our problem on a very old unit, and we now have cool air again!! Yay!!
Yes, I would recommend him as a technician to other people.

Was having some thermostat issues. Dylan came out and ended up replacing it. No questions. Time will determine if this solves this. Looking good so far.

Erik and the other tech from Kettle Moraine Heating were great. They did a through job of cleaning and servicing my AC. They were respectful and knowledgeable. I would not hesitate to recommend them. Very satisfied!

Such a nice fellow. Very thorough and competent!!

The installers did a really nice job and explained everything to me what they did and they did a great job.

Travis of KM Heating did a fantastic job services my furnace. He solved an annoying humming noise coming from one of my vent

Feb 26th 2026 Patrick also did a fantastic job. I'm very satisfied with the on site service as well as customer service. I setbup for the Ultimate plan !!!Thank you all

April 2, 2026 Mitch and Joey serviced my water heater. Both were very polite and answered all my questions. I'm so pleased with the service Technicians at KM and so greatful that they offer an affordable service plan. Keep up the good work!!!

Lucas found the issue immediately and fixed it in less than a half hour

Very friendly and easy to work with from the first visit until installation of our new AC. It was time to replace our 17 year old unit and Kettle Moraine provided us with multiple options - installed our choice quickly and fixed several issues created by the original AC. Very professional, on time (actually installed the unit two days early!) and a pleasure to work with. Highly recommended!

Excellent service. Well done.

Kettle Moraine Heating Technicians was very professional. I recommend Kettle Moriane

The service rep for the company, Patrick, was personable, professional, and efficient! He explained the service in terms we could understand! Kettle Moraine is fortunate to have him as an employee!

Fast & efficient

I had another impressive maintenance service call from Kettle Moraine HVAC!! My technician was Jeremy who was .
, as always , professional, courteous and knowledgeable ! Even though the outside temp was humid and in the 90s, he worked hard to service my air conditioner for another year ! He answered my questions regarding a dehumidifier which I am purchasing next . All my services from KM reassure me of the safety and efficiency of my HVAC in my condo . Thank you Jeremy !

Friendly and very professional people

Easy to schedule time.
The whole crew were very professional, efficient, friendly and excellent job.

Winter furnace service. Doug was great. Showed me what he was doing and see the actual performance of the furnace efficiency from a combustion gas meter; still operating at over 95% after 7 years. Also took care of a small 'buzz' with a simple strap install. Thanks!

Edit August 2026--
It was time to replace our 31 year old ac unit after a few no starts. With some reasonable discounts and much more efficient equipment, we upgraded the furnace and a heat pump in lieu of just an ac unit. Regan, Joe, and Ben were all great. Professional, neat, and fast. They answered any questions and walked me through the functions and operations of the new hybrid system. The new thermostat/controls were easy to set up. Super quiet and smooth operation so far, but it has only been 20 hours. Only complaint is NOT a KMHAC issue...the Lennox app is awful, crashes constantly. But I knew that from reviews. As noted, the entire experience over the las 2 weeks from Rick the salesman to Ben, Joe, and Regan the technicians for the install was as smooth as can be and we appreciate them.

Very nice gentleman arrived at my house earlier than they even said so that was nice, he was dressed professionally, did a really good job impressed me a lot, you could tell he knew his stuff, ty👍

Annual AC maintenance service. Brent has serviced our equipment in the past. Professional, efficient and friendly service as usual. Detailed explanation of an issue found and recommended fix. Definitely averted a future problem which, of course, always occurs when the temp is in the 90s and dew point in the 70s. That’s why you have annual maintenance performed.

We had Kettle Moraine install a new AC and air handler. All the men were really professional and respectful of our home.

Great company!
Even better the people who work here are some really great hard working people.

They are really for the people.

Brian was here for an AC tuneup. He was thorough and courteous in his work. We have been very pleased with Kettle Moraine since we purchased the furnace/AC system last fall.

Very good service. Very professional

Geothermal diagnosis was quickly done with courtesy and experience with geothermal units.

Matthew did a great job explaining the annual maintenance performed on our A/C ! Always professional service -on time and efficient

We recently had a clogged drain recently that caused our basement to flood. I called Kettle Moraine after hours and while they weren’t available to come to our home that night, a technician talked to me on the phone explaining what to do & helping me diagnose the issue. He was so friendly & delightful given it was about 9:30 PM. I wish I could remember his name to thank him personally The next day, Paul Purdy came out and helped us. He went above and beyond just fixing our clogged drain & cleaned our outdoor AC unit as well. He was the best. We got set up with annual services now & can’t wait for Paul to come back out 😂

Miles was prompt and polite. We've always had great experiences with KMH& AC

Dustin was quick to respond. He came out and not only repaired the furnace as requested but also went above and beyond by identifying a problem with our A/C unit that is under warranty.

Thermostat had failed while on vacation. Called K-M Heating and Miguel was here in less than 2 hours. Outstanding, competent and prompt service.

Matthew showed up on time, from Kettle Moraine Heating &Air. He was very informative. Conscientious about his job , I feel like the maintenance he did for me is going to make my unit last a lot longer.

Patrick Gorman, provided annual A/C
maintenance and service. Patrick is very professional and friendly. He answers all my questions and informs me if there are any items that need attention. I am grateful for Patrick!

Positive experience with a very good employee, knews his stuff, did the job well in and in a timely manner.

Arrived at the start of the appointment window and answered all of my questions.

Had AC installed a few months ago and I am very pleased with my overall experience. Pete was amazing with the initial quote meeting and the work done a few days later by Dan and Joshua was very good. They not only installed the AC, but also added an outlet outside and fixed my exhaust pipes on the back of the house. AC has been working great ever since. I would use this company again and recommend it to others.

Extremely nice people to work with.
Highly recommend them for sales and services