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

KETTLE MORAINE, installed my new Lenox furnace in 2016. The install crew was very efficient and completed the install in 1 day. They have performed yearly maintenance service ever since. Brian has been our tech for several years now. He is very personable, knowlegable, focused, and does a great job. He has been proactive in replacing parts known to be problematic or on recall. Always cleans up when done. This year 2024 Aron provided outstanding service PM my heating and Ac systems. Early this October my thermostat froze up and would not work. Aron returned solved the problem and showed me how to reboot it again so I could fix it myself. Thanks Aron and thanks to Kettlemorane Heating and air conditioning for the geat service for the last 9 years.

My HVAC system is now 10 yrs old just had my annual service. Miles was the tech. Mile was very thorough and covered all the bases. He was very personable and explained things very well.

Our technician was awesome!

Matthew was very pleasant explained everything thoroughly was very pleased

Dylan R -arrived on time, was very professional, explain things to me and was upfront with pricing. I would recommend him.

Had them install a new furnace/AC last December. Finally needed to turn in the AC on last week and it was making a metallic buzzing noise. I called to get it looked at and a service tech was here in about 20 minutes, he diagnosed the problem in about five minutes and only needed 10 minutes to fix it. [manufacturer's issue, two pieces of metal were touching that should not have been, causing a vibration]. Works fine now.

They were very helpful and explained everything to us. Very smooth process and didn’t have to wait much. Also really good plans if you’re on budget or can’t pay it all in one

Matt was very detailed in the maintenance/checkup of the furnace.

We had them install a generator for us and are very impressed with their level of customer care and availability! Thank you!

Technician was great at explaining his services, why they are important and how to save money on our heating and cooling bill.

They guys were very informative and very courteous. From getting an estimate to the installation . Will recommend!

Outstanding service, as usual. Very friendly plumber, Mitch, who showed me everything he did. Used authentic Kohler replacement parts, and other high-quality materials. Recommend highly.

On time, pleasant and efficient

Elian Rivera was a pleasure to deal with. Very knowledgeable and efficient. Signed up for maintenance contract - looking forward to continuing with Kettle Moraine.

I’m very pleased with the job that Khamya did for my seasonal a.c. inspection. Very thorough and answered all my questions.

Thank you, Patrick Gorman for your expertise. Appreciate your answers to questions and respect for wildlife nearby.

Kettle Moraine Heating and Cooling always has friendly and honest service every time they’ve come out.