The service technician Miguel arrived early and immediately began his evaluation of our problem. He explained in easy terms what was needed and what our options were. He worked quickly to resolve the issue. We are impressed with Miguel and Kettle Moraine and plan to continue to use their services in the future.

Always prompt, great customer communication and 100% reliable professional work! Friendly on each visit.

Very professional, explained everything so that I could understand.

Super friendly and quick.

Excellent technician Jacob, very knowledgeable and friendly, straightforward and trustworthy, no gimmicks, fixed our AC quickly.

Kettle Moraine responded to our concern promptly. The service technician (Jeremy) was on time and got to work on the issue. He diligently examined our hvac system and diagnosed the problem and the fix.
Jeremy was polite and professional and we appreciate his service.

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 !

The Kettle Moraine installation crew were very punctual, knowledgeable, and efficient. They were very helpful in explaining the entire process. I highly recommend them for any HVAC issues you may have.

My wife and I knew, this year we would most likely need to replace our AC unit. After calling a few different companies, we chose to use Kettle Moraine Heating & Air Conditioning. We made our decision based on how personable and knowledgable the tech Patrick Gorman was. Patrick provided me with several quotes for a replacement AC unit and answered every quesion I had. 3 weeks later they were at my house performing the install. I know 3 weeks sounds like a long time to wait but i would be skeptical if they weren't super busy this time of year (June-July). Everything was completed without a hitch and our AC unit is currently humming along! Thank you to everyone who was involved at Kettle Moraine Heating & Air Conditioning!!!

Excellent

Luke was great!! Very helpful and taught me alot. Explained the details and no pressure.
A big purchase but I feel he will follow through!! Anxiously awaiting my new aircondioner and furance. Thank goodness he was able to repair the air conditioner on the hottest day of the year. Yeah

Bill D worked on a Friday before the holiday to install a new A/C unit which was great. He was extremely professional, knowledgeable and explained everything in detail. Great worker and would recommend him and Kettle Morraine HVAC for their services. Much appreciated!!

Arrived on time, fixed our problem, and was very easy to work with & friendly. Would highly recommend.

I’ve been working with Kettle Moraine Heating for a few years now and appreciate the quality of work and prompt service! Pete, Damian and Ian installed an air conditioner at my home this past week. Very professional and thorough, assessing what needed to be done and then following through. I am also on their scheduled maintenance plan and appreciate the organization and how they take care of their customers. You would not be disappointed If you worked with this company!

Outstanding service, patience and helpfulness. Technician took time to explain everything and offer every opportunity for warranty and payments. Thank you.

Ian was awesome. Showed up on time. Dealt with all my questions and provided honest advice
Thank you

I live in a 1936 house in Sherman Park and was looking to replace my circa ~1978 furnace with a full heating + AC system. I got quotes from 4 different vendors and not only was Kettle Moraine the best value, but they were also the most thorough in walking me through what they proposed and I never felt like they were trying to sell me something I didn’t need or want. Pete Bontempo was super friendly and helpful, and Kevin Boehm’s install crew was very professional. I’m really impressed with the results and attention to detail—from reconfiguring the gas line connecting to the unit, to making sure the building penetrations into my Lannon stone house were clean and look good, to leaving the place tidy when they left. Friends who have seen the finished product commented on how impressed they are with the install—the crew clearly wasn’t just looking to get in and get out as quickly as possible; they truly care about the craft. Can’t recommend them highly enough!

7/3/26 update: My AC unit quit working and was back up and running with a new capacitor less than 90 minutes after I called to place a work order. The tech was super friendly and professional, and everything was covered under warranty. You cannot beat Kettle Moraine’s customer service!!

Had a fuse that kept popping in the panel & couldn't pinpoint the issue. Jake A. arrived on time and quickly diagnosed the problem & offered a solution. Was done within a couple hours and everything has been working great! I always recommend Kettle Moraine for heating/plumbing/ electrical.

Had a new water heater installed today. Installation crew was efficient and professional. Very clean install and left the work area spotless. Two friendly and informative plumbers was a bonus.

On time, friendly, fast, efficient and respectful of need of disabled person home.
Excellent company, will refer to everyone.

A huge thank you to Kettle Moraine and Brian for coming out to repair my AC on such short notice.
Our AC went out while it was 90° outside and they had someone out within an hour of us calling. We were out of town and had someone house sitting, they made this such an easy process while we were handling this away from home. I am so appreciative of the service that we received from this company. Would definitely recommend.

Professional and knowledgeable. Would recommend!

Prompt. Knowledgable. Thorough. Can’t ask for more. Perfect.

Elian was very knowledgeable with our Mitsubishi unit. Thank you for being so great to work with too!

Very prompt, professional, efficient, and helpful! Excellent communication and service!

Miguel was very friendly and efficient and even offered to pick up a coffee for me on the way to my house.

Jeremy came out late on a week night and worked in the dark and heat to correct material issues with our AC system. He did an excellent job and was meticulous in testing the entire system to make sure everything was working well.

Brandon was excellent! Central air went out, they had him come out the same day, only to find we need a whole new unit. Great news, they are installing tomorrow due to health concerns for my 92 year old Mom; that’s a company that shows they care about more than just $’s. Brandon was very knowledgeable, helpful and kind! I love working with Kettle Moraine; good, long term family business. I love their community involvement as well as their commitment to solve your problem(s). Wouldn’t go anywhere else!

Luke Lutzke came to my house today to work on my AC. He was absolutely amazing with his work and was very professional explaining what my needs are with a new AC unit.

Dan and the rest of the team were amazing. They came to install a new AC and furnace, working in the attic at unreasonable temperatures during the heatwave to ensure we have comfortable home temperatures moving forward. The entire team was friendly and very professional. They answered all of my questions and tested both systems to ensure they were properly set up. They truly went the extra mile to ensure we were happy with the job. I couldn't have asked for a better team to work in my home.

The team installed mini split in my small house. They worked fast, didn't turn off the power to the house so I had my window A/C running the whole time and was comfortable at 90 F outside. They came on time and cleaned up after themselves. Overall it took them about 5 hours to complete the job. Very satisfied customer here.

Brad did a great job and was very
knowledgeable. I appreciate his service !

We recently purchased our home a couple years ago and were told to expect to have to replace the whole system soon due to age. That said, recently our system failed so we called Kettle Moraine. They did a full HVAC system inspection and found that not only was the original system was not installed properly, it wasn't even designed correctly in the first place. The KM team (Tim, Aaron, Dave, Riker, Neil and Trevor) took the time to redesign and retrofit the entire thing. The installation looks great. Highly recommend!

Friendly and knowledgeable!

Elion did a great job. He was courteous, polite, and knowledgeable. I will request him next time!

Paul rhoroughly inspected the AC unit, found the problem and was very helpful. Thank you! Looking forward to finally fix it for good.

I switched to Kettle Marine heating and Air Conditioning because the contractor that installed my furnace in 2012 has gone downhill horribly with their service in the last two years. Jeremy was outstanding. I wish I'd been using him all this time. He pointed out so many things that the previous contractor should have done and didn't do. I feel so much better knowing he will be taken care of my air-conditioning in my furnace because his knowledge is excellent

Jacob was outstanding! He took the time to clearly explain everything that was going on with our current A/C unit and walked us through all of our options. He was knowledgeable, professional and never made us feel pressured. Thank you Jacob for your excellent customer service.