Patrick was extremely professional and thorough with the furnace checkup. I highly recommend Kettle Moraine Heating & Air for services. Great people.

Lucas Bizub did a great job and was very informative. He took time to explain everything and I really appreciate that.

Excellent technician!! And what a high quality job he did

Matt was very good prompt and understandable.He explained the issues with our HVAC unit which helped for us to make the purchase easier. And of course he got along well with our pets

We had a new heating system installed and from the estimate to the install was top notch. Bill and the entire crew at Kettle Moraine were great. All very nice and they got our system up and running in 2 days. At the end of the install Bill explained how to run the remotes to the mini splits in detail and we are very happy with this company. I will recommend them to everyone if in need of furnace or air conditioner service.

Brett arrived as requested. Described the work that was scheduled, performed those task, explained all that was done, and the status of the equipment.
We then went through the invoice and its line items. The credit card was scanned and process completed.
Very personable and worked quietly. Would recommend his technical skills to neighbors and Kettle Moraine if asked.

We had a radon system installed. Kevin did a great job and answered all of our questions. We highly recommend.

Friendly professional service on my generator. Will continue to use their services.

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

Lucas and Brad were wonderful. We appreciate everything they have done.

Very nice and professional. New Furnace looks and functions great.Took less time than was expecting. Thank you.

Great service
Great people

They did our new furnace install in 2022 and that was a great experience! Brent came out to replace our 25 year plus thermostat and was punctual, personable, and professional. I will recommend km heating to anyone who asks.

Everything was great! Arrived on time, checked everything, let me know what was going on with my furnace and gave me all my options. Was good!

Bill and his crew did a great job with my HVAC install! They explained what needed to be done, the approximate timing and concluded with a review of their work, answering all of my questions. Thank you Kettle Morraine Heating & Cooling!

Great service!

Purchased a new furnace and was able to have it installed the very next day! Jordan and the crew from Kettle Moraine HVAC were prompt, polite, got to work immediately and got the job done very efficiently. New furnace installed and could hardly tell they had been here. Great job!

Kettle Moraine removed and installed a new AC unit at my home. The crew was professional, polite and they did a great job removing, installating and setting up the new unit.

Service tech Brett zielski arrived and removed front cover to my furnace but did not perform any trouble shooting or diagnostics to determine the problem. He asked me what the symptoms were and I told him it sounded like the fan was not coming on and I believed there was a problem with the blower/fan assembly.Brett again did not perform any diagnostics to confirm what I conveyed to him and told me the furnace was to old and should be replaced. I found out from another company that universal blower/fan assemblys are made and could have been installed to complete a repair. Brett never offered that repair option to me. I had the furnace replaced at the cost of 6,000.00 dollars and I believe that the 150.00 dollar cost of the poorly performed service call by Brett should have been applied to the cost of the replacement furnace. That option was never offered by Brett or the kettle moraine heating and A/C company. The new furnace was installed on 1/23 by install technician Mike Radliff and his coworker Joe. Extremely knowledgeable and friendly install team. They arrived at 8 am and completed install by 12 noon. Heat was restored to my very, very cold house by the Lennox merit 96% AFUE efficiency furnace with a sealed burner box for extremely quiet operation. A electrician named Ian had to add a switch and remove an outlet which was all completed the in the same day as well. Ian was friendly and efficient. Kettle moraine heating and A/C partners with a company called permit Flow they submitted permit applications, coordinated with my village on approvals, arranged and scheduled the inspection and closed out permits once everything was complete. Found this process extremely beneficial for busy consumers like my self.

First time we had Kettle Moraine Heating come and do a furnace tune up. Jacob did a fabulous job on my tune up. Very professional and friendly. Will definitely be using them again.

Great service and advice.

Had a PM done on our 2 year old furnace. The technician Matt was very knowledgeable and explained all the work he was going to complete prior to starting the job. He was very thorough and professional. Also he saved me some money on including a future PM on our A/C unit.
A job well done.

Ian and Lucas did a good job in cold and windy conditions.

Nice job by install crew. Done on time and left work area clean. Install was first class.

Jacob was very professional, friendly, and thorough! Excellent service!

I had my first visit from this company recently. They were professional from top to bottom. I highly recommend them.

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

1st yearly inspection by KM. Nice tech, explained service well. Happy with experience.

Always very prompt for appointments and friendly. The office staff is friendly and efficient as well. Great service!

Matthew is a true professional. He answered my questions and addressed my concerns with enthusiasm!

Furnace replacement work was well done .

I will recommend them to other people.

Jeremy was professional, polite, and a pleasure to work with.

I’m very happy with my whole experience with Kettle Moraine Heating! From the salesman to the installers! Everyone was courteous and professional! I would recommend them to anyone who needs their services!

Very thorough with the inspection and very friendly. Explained what he discovered and said we would receive a detailed written estimate via email.

Lucas and team were efficient, professional and friendly while installing our tankless hot water heater. We always appreciate the great service from Kettle Moraine Heating and Plumbing.

Paul examined our heating system in detail, taking various measurements, removing covers, checking system components, even taking photographs. I was very impressed with his professionalism & thoroughness.

Get experience with Paul from Kettle Moraine.
He is top notch service professional . He did thorough maintenance check on my heating system and was able to advise me on a new a/c unit. I highly recommend their service.