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Whether it’s keeping your home or business at the perfect temperature, ensuring the lights stay on, or taking care of your plumbing, we’re here for all your repair, replacement, and maintenance needs.

Dependable Solutions,
Family Values

• Service & Support 24/7 | 365 Days

• Certified, Licensed & Insured Technicians

• 3rd Generation, Family-Owned Company

• 5-Star Customer Service

• Careers with Growth & Support»

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Heating | Cooling

Electric | Plumbing

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About Kettle Moraine Heating

For over 30 years, Kettle Moraine Heating & Air Conditioning LLC has been helping homeowners and businesses in Southeastern Wisconsin stay comfortable and safe.

As a family-owned business, we understand the struggles of dealing with heating, cooling, plumbing, electrical, and air quality issues. Whatever problems you’re facing, we’re here to solve them.

Our services are designed with you in mind. We make complex installations and repairs simple, offering free estimates, fast service, and quality repairs that you can trust.

We also offer top-quality equipment from trusted brands like Lennox, Mitsubishi, Carrier, Generac, AprilAire, Bradford White, Rinnai, and Honeywell. Plus, we service most other brands.

For all your home comfort needs, reach out to us today—we’re here to help!

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What Our Customers Say

Excellent

Kettle Moraine Heating & Air Conditioning, LLC

Based on 3294 reviews

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Kathy Gunderson

Very courteous service man and excellent service. Wasted no time in getting the job done and only did what was needed. Definitely will use their service again.

William Nickel

We love Kettle Morraine! All of their service providers are professional and knowledgeable. Greg came out today and completely tuned up our AC.

Marjorie Bublitz

The scheduling process was very easy and Brandon & Patrick arrived on time. They even called me to tell me they were running ahead of schedule. They did a thorough evaluation of the furnace, AC & water heater and explained their findings to me with pictures they had taken which were very helpful. They were friendly, courteous & professional. I would highly recommend this company to family and friends. Great communication from the company from the time I made the appointment to the completion of the job. Thank you Brandon & Patrick!

Robert Patterson

Dylan and Brandon provided GREAT service!
Explained the issues with my AC unit and saved me a bunch of money. Turned out the capacitor that replaced the old one was also bad. We thought the compressor would need replacement which was substantially more expensive. But they were honest and did not do unnecessary work. Use KM with confidence!

Miguelangel Frias

From the initial contact and to the final talk at the end of the installation KM has been a great help to our families needs. Furnace last year now the AC this summer their service has been essential and excellent. We thank Marc and the team for their hard work and dedication to the customer service they have given my family.

Henryk Montygierd

Thank you!

Ed Seybold

Kettle Moraine is an excellent HVAC company. Their technician Jacob is a very engaging and knowledgeable young man. I recommend this company and technician

Mark Weber

The service tech was very knowledgeable and courteous. The job was completed on time, as promised. I would highly recommend this company for radon mitigation services.

Mary Lawarance

Excellent customer service very pleasant attitude very timely manner did real well and definitely would have him come back again thank you for all the good service

Chuck Moyer

The Tech was on time, friendly and shook my hand. He quickly diagnosed and fixed the problem and then took time to teach me about my system and gave e options on how to make it run better. Absolutely no fear tactics or over selling.

I am quite pleased

Jeffrey Coleman

Damyon was very respectful and we really really enjoyed him you send him to my home anytime.

Jeff Ebens

Very thorough ac system tune up. Jim reviewed fan circulation optimal settings and filter requirements as well.

rebecca plotecher

Matt found the problem with the air conditioner and fixed it in a very timely manner..

Cindy Lu Who Whoville

Very good work and great guys

Dan Martin

Prompt, reliable, honest, Knowledgeable and fair pricing, highly recommend.

Earl Titze

The best

Raymond Martinez

Once again the Kettle Moraine professionals demonstrated why they are the best. Dave Thiessenhusen took the time to go over some helpful tips and he was courteous, efficient and his 45 years of experience were visibly on display. Thanks Dave and thank you team KM.

Bob Newman

Very professional, arrived on time, pleasant and efficient. They made sure that everything was neat, clean and tidy before they left. Pete explained the differences in the new system.
Overall a very good experience, from the initial meeting/quote through installation and operation.
I would definitely recommend Kettle Moraine Heating to friends, neighbors, or anyone.

Stuart Ciske

On time (even early!) great communication and reminders. Quick service. Technician had parts for our furnace/AC with him so no delays.

Mary Lee

Had an 8 am appointment for furnace check up. Got a text with a pic and a name just before Jim came out. He was prompt and performed the service in the amount of time he said it would take. He was friendly and gave some good advice about furnace care. Very professional job.

Daniel Dupies

Regan and his crew completed the furnace and heat pump installation in an efficient manner, and Regan walked me through the work completed. He also explained how to use the new thermostat. I appreciated the crew’s attention to not tracking the snow and wet into the basement.

Kristine Pettit

Jeremy O. went above and beyond. He found the root of my problem and dealt with management and Lennox to make sure everything was repaired correctly. His knowledge and determination to find the “true” cause of my equipment failure was outstanding. I am truly grateful!

Douglas W. Keiser, Ph.D.

The technicians at Kettle Moraine are knowledgeable, friendly, and honest. I appreciate how they explain what they're doing and answer my questions.

M S

Prompt and professional service

Leanne Glorvigen

Always on time, friendly and thorough…

Barb mcnally

Patrick was prompt in fact was at my home earlier than expected 😁. Good guy kept me informed.
Thanks Patrick

Juli Jilek

Guy was very helpful and kind

Gsm

Prompt, quality install of new furnace and ac unit. Competitive discounts using Costco membership.

Ihn Master

Quick service and well done!

Chris

KM does a great job helping keep up with my regular HVAC maintenance and repair. I've had parts replaced and even a full new AC unit at reasonable prices, with work done quickly and done well.

I appreciate their honesty as well. I've got a 20+ year old furnace that's still rocking and rolling and have yet to have a pushy conversation about replacing something that's still running great.

Ryan Stancl

Honest technician. They were able to have a technician come out and replace our capacitor very quickly for a fair price!

tom almanzo

Jeremy with Kettle Moraine HVAC was awesome. Communicated well, worked within our tight schedule, gave us honest feedback and options, very knowledgeable and helped educate us on root cause of our issues. Would highly recommend.

Jenny Betances

Excellent work thank u

Mindy Schouviller

Great on call service over a very hot 4th of July weekend! Jeremy was able to fix our AC the same day!

Cheryl Pabich

OMG - The absolute best experience I have had. I almost hate to say how great they are for fear that they will get really busy. I wish everyone had the same skill, knowledge and customer service that we received. Top Notch, I will be a customer for life!

Dona Geracie Curran

Patrick was on time, serviced the furnace quickly and super polite!!

John Catalano

You did fine all is well

Adam Robards

Brandon and Jeremy provided professional maintenance on my A/C system checking the performance and cleaning it out. They answered all of my questions and gave advice on things I could do to help take better care of my HVAC.

Tony Magestro

Aaron and Pam rescued our family Fourth of July Gathering. They came out last minute to help us figure out an issue we had with a bad thermostat and no AC at 90 degree temps .. Unbelievable service and even better people. Thank you very much For the help and I will be referring anybody to this company.

Bruce Russell

Everything went well and the technician worked in a professional manner.

Juan Godina

Brandon was extremely knowledgeable and was able to trouble shoot in under 10 minutes. Highly recommend and ask for him

Stephanie Ayala

Jacob was very professional and explained everything to us about the replacement of the filter.Very nice young man

John Guardalabene

Great service! Thank you!

Andrew Johnson

KM Heating always does a professional job servicing customers. The communication throughout the process is excellent.

William Korinko

Best Tech who’s ever done work in our home for a service call! I hope he will be permanently assigned to our account

Scott Page

Jim did a great job on our garage AC unit - very detailed and great to get this flushed out.

Sarah Foster

Arrived on time. The KMRep was courteous, friendly, explained things very well. Fixed the AC unit! O happy day!

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