Reliable Service from Installations to Maintenance and Repairs

At Kettle Moraine Heating & Air Conditioning, LLC, we understand the unique complexities of boiler systems. That’s why we’re proud to have a designated team of expert technicians with over 35 years of combined experience servicing boiler and hydronic systems.

Boilers & hydronic systems require a different skill set compared to traditional heating systems. Our technicians undergo ongoing training and stay up to date with the latest industry standards to ensure they’re equipped to handle all your boiler service needs with precision and expertise.

Whether it’s routine maintenance, repairs, or installing a new boiler system, you can count on us to keep your boiler running smoothly and efficiently.

Specials & Financing Available!

Take advantage of our exclusive specials and easy financing options tailored to your needs. Contact us now to start saving!

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Boiler Replacement & Installation

Replacing your old boiler can save you money on energy bills while providing more consistent and efficient heating for your home. Kettle Moraine Heating offers expert boiler replacement and installation services, providing solutions that fit your home’s needs.

We carry trusted brands like NTI, Bosch, Buderus, and Lennox, all of which offer high-efficiency models that will keep your home comfortable year-round.

Our experienced technicians will assess your home’s heating needs and help you choose the best replacement boiler. We’ll then handle the installation, ensuring your new system is up and running smoothly so you can enjoy maximum comfort and savings.

Schedule your free estimate today, and let us show you how easy it is to upgrade to a better heating system.

Boiler Repairs

Is your boiler not working properly? At Kettle Moraine Heating & Air Conditioning, we specialize in fast and reliable boiler repairs to restore your home’s heating system. Whether your boiler isn’t producing heat, is leaking, or has stopped working altogether, our skilled technicians can quickly diagnose the issue and provide an effective solution.

Common Boiler Problems We Repair:

Boiler Won’t Turn On
No Heat or Hot Water
Boiler Leaks or Pressure Issues
Noisy Boiler

Our team is available for 24/7 emergency service, so if your boiler stops working, we’ll be there quickly to restore comfort and warmth to your home.

Boiler Maintenance & Tune-Ups

At Kettle Moraine Heating & Air Conditioning, we understand that regular boiler maintenance is essential for reliable performance and efficiency. Routine maintenance helps prevent unexpected breakdowns, improves energy efficiency, and extends the life of your system, ensuring consistent comfort year-round.

Our skilled technicians provide comprehensive maintenance services, including system inspections, cleaning, and pressure checks to ensure everything is working at its best. We also test and calibrate key components, such as your thermostat and safety features, to keep your home safe and your boiler running smoothly.

By scheduling regular maintenance, you can avoid costly repairs and ensure your boiler operates safely and efficiently. Trust us to keep your heating system in top shape with our expert maintenance services.

Google Rating

4.9

Based on 2498 reviews

Kettle Moraine Heating & Air Conditioning, LLC

4.9

review us on See all reviews

Joe Marx

1733010274

Luke was very courteous and answered our questions

Ray Willoughby

1732981207

Bill is very professional and provides the highest quality service. He explains what he is doing and informs me of any issues he may find and what is needed to correct. I specifically request Bill because of this. He is a real asset to Kettle Moraine.

Robert Nakielski

1732975782

Brian B from Kettle Moraine heating was prompt on calling me after i submitted an after hours call. He stopped at our home in a very reasonable time. He was very polite and answer all of our questions. We were up and running in a very short time. I would recomend Kettle Moraine to others. I like the business model that makes them customer driven. Great job

David Rudey

1732926519

Michelle Gluszcz

1732925180

Melissa Polcen

1732923822

We used Kettle Moraine Heating and Air for radon mitigation. Easiest process! We emailed to schedule for an estimate. The response was quick, the service rep was friendly, knowledgeable and explained everything. The installation team was prompt, friendly, super clean, and completed everything with no interruption to our day. Highly recommend this team!

John Summers

1732922385

Ronald Vaughan

1732908791

Extremely professional. Replaced my water heater same day! Will use their services again.

Heather Thiele

1732903662

I highly reccomend Kettle Morraine Heating & Cooling. I'm on a limited income, my house is old & the wiring is questionable so repairs are always complicated. They helped me get my heat going for a reasonable price, they informed me of several options, they talked me through each step & helped me to understand the whole process. I've never had a more pleasant experience with a service tech- he was super conscientious & did follow up. When initially calling, everyone I spoke to, (receptionist, service desk, manager & schedulers) was professional & kind. Not only did I get a call from the tech when he was on his way, but I got a txt from the office also with his photo. Will definitely use them again

Gary Janetzke

1732902903

Prompt complete service.

Jeffrey Berens

1732898424

We have used Kettle Moraine for years. They are always timely, polite, and honest about the services they provide. They explain and show what they are doing. A+++

Robert Leonard

1732758261

Brian came out today and repaired our furnace. He was very professional, friendly, and explained everything in detail. Excellent company to deal with from the first phone call to the final repair.

Sue Peterson

1732756336

Excellent!

Tony Cichy

1732755136

Brent was awesome

Bruce Radway

1732748684

Tyler did a great job servicing my furnace and humidifier. He was prompt and professional which is not unusual for Kettle Moraine Heating. I wouldn't use any other company. Five stars for sure.

Jeanne Krajewski

1732747849

Absolutely highly recommend Kettle Moraine Heating, A/C and much more! From estimator, Cole to installation experts Mike and Joe, office Sherry and Katy and electricians Jake, Joshua and others..... new furnace and A/C installed in record time and explained the features. Each employee professional, courteous and clearly knew their business. Highly recommend this company!

Deb Geary

1732737035

Cory did a great job. Excellent service

Ally Cetnarowski

1732736361

Jacob was on time, very pleasant demeanor and explained everything thoroughly. Highly recommend him for future service

Robert O'Keefe

1732734768

Dylan Rohde from Kettle Moraine Heating is the best HVAC tech we have ever had in our home. He went “outside the box” very thoughtfully and discovered the sources of three issues that have plagued us and had not been accurately diagnosed by our previous HVAC firm - which would have cost us at least $1500 to repair. He fixed all 3 at NO COST to us! Wow.

David Hammen

1732725279

Our church Immanuel UCC in West Bend has a Peace of Mind package. We had out fall maintenance scheduled for Tuesday the 26th of November starting between 8-10:00 AM. Jeremy and Damian showed up at 8:00 as scheduled and began their task of servicing our 5 furnaces and 2 boilers. Everything went off without a hitch. There was one repair done on one boiler, but it was no surprise because we were made aware of the issue that last time, they inspected that boiler. Jeremy and Damian were completed with all the inspections by 2:30. They were super to work with and very courteous to everyone they interacted with.

Nicholas Beadell

1732674172

Thanks for showing up on short notice and being patient going over all our options. Great job!

Jaclyn Anderson

1732666773

Awesome fast customer service sherri and sales tech guy Matt was so prompt professional and left us so happy. Great experience!

Dan Las

1732663430

Our experience with Patrick from Kettle Moraine Heating was very good. He was prompt, did a great inspection of the furnace. Very good service would highly recommend him.

Richard Lotze

1732663102

Kathleen C.

1732661156

I was referred to Kettle Moraine thru Home Depot store referral program last yr. After interviewing several HVAC companies, including the one I had used since 1995, I chose to purchase both furnaces from Kettle Moraine Heating & Cooling. Great experience with the install and I just finished the annual maintenance and cleaning service. The technician was on time, very professional, reviewed my expectations before starting the work and explained everything to me afterwards. I am very happy and grateful to Home Depot for introducing me to Kettle Moraine Heating & Cooling. I also learned today that KM has other services such as radon mitigation, and plumbing. I like the idea of calling one trustworthy company for maintenance projects so that is a plus as well.

Thomaspaintss

1732656582

Thank you for you help!

Ron Erdmier

1732652721

Fantastic service, see ya in July.Thank you, Ron Erdmier

VIJAYA BHASKAR REDDY PULI

1732634701

Victoria Witt

1732634134

It was great that the company sent us a text ahead of time that the technician was on the way with a picture and Information on his favorite sports teams. He was on time And very respectful of property. Everything. looked beautiful when he was done. Meaning the stuff he Installed looked great and to code and everything was clean. He was politeand informative. All-around great experience. The salesman was nice and friendly, and all the staff that I worked with. This install has helped us decide that this company is our new go to for any maintenance.

Lisa Weinzatl

1732633700

Everything was done quickly and professionally. Would definitely recommend again.

Andrew Kale

1732591578

We had Brett out as a requested technician to inspect our furnace in preparation for the winter ahead. He confirmed all was functioning properly and gave me a heads up that the filter would need to be replaced in the not too distant future.He is personable and I will request him again for inspection of our air conditioner before summer rolls around.

Rizwan Ahmed

1732588965

Andrea Ortin

1732583451

Very thorough, with clear explanation of services needed!

Jean Garrity Murphy

1732582787

I had the BEST experience! After four weeks of another company “trying” to fix the furnace, I finally called Kettle Moraine Heating. Tim came over within an hour of my call, and the furnaces & AC units were installed two days later. Matt and his team were professional, knowledgeable and hard working. I’m so happy I went with Kettle Moraine!

Sarah Kyler

1732582053

Tommy Murray

1732566489

I've spent the majority of my life in some form of customer service so I tend to set the bar high. Well this company has truly exceeded my expectations. Professional, Curteous and Informative are just a few words that come to mind. Kettle Moraine you have a customer for life.

Kristine Reger

1732564380

Jacob was friendly, efficient and answered all my questions.

Eastwood Manager

1732556956

Joel came in and solved our ongoing electrical problem in only three hours. Very grateful for him as no one else had any idea what the dilemma was in this much older building.

Gene Daul

1732551137

Aaron was friendly and did a good job on fixing my furnace

Abby Kanyer

1732497707

The staff of Kettle Morraine are always prompt, friendly, professional and thorough. They’re also dog friendly which is a huge plus. We’ve had excellent service

Gail Aufdermauer

1732471892

I appreciate the professional, knowledgeableservice of Greg W from Kettle Moraine Heating& AC, who takes pride in his work. He took thetime to keep me informed and show me with thework to be performed on my furnace, along witha potential problem.

Susan Còrcoran

1732470623

Very professional and courteous, answered any questions I had.

Harmony Stencil

1732465492

The whole experience working with Kettle Moraine was great! Making the appointment to get a new furnace/AC/humidifier/air filter system was quick and easy. Getting texts with the worker's pictures was reassuring and thoughtful. The crew worked fast and were polite and considerate. And the price was very reasonable. We have found a company that we will continue to work with for future home projects!

Brian Delfosse

1732461528

Heater went out on weekend evening (of course) and needed to get somebody here. Damyon showed up within about 45 min from my call. Polite and diagnosed my problem while keeping me informed during the process.

Lisa Rowland

1732377213

I’ve had nothing but excellent experiences with the Kettle Moraine Heating and Air Cconditioning staff. Patrick was here for semi-annual maintenance. Patrick was, as always, professional, and friendly. He was thorough, informative, and answered all of my questions and his services were greatly appreciated.

Nick P

1732324791

From what I was told by my mom they did a very good job.they where everything you'd expect nice friendly and cleaned up like they where never here walked my mom through everything that I need to know when I got home from work. I won't leave out the sales guy who worked with me while I was at work going over everything. I had 3 quotes done and sat down with my mom and said OK so who do we trust because I was at work and everything my mom has said about them has been good and I am glad we went with them from start to finish If your in the market I would choose them again and they will be doing all my equipment check ups from here on out

Bob Kelly

1732324486

Owner placed restrictive pest screens on the intake and exhaust vents off the furnace outside the condo resulting in a back pressure trigger and cycling of the furnace.

Barb Bruns

1732314747

Jim Bialk came to tune up my 1 year old furnace and taught me so much about the furnace and especially about the best filters to use. I learned so much from him. You can tell he likes his work skill and is happy to take the time to educate a homeowner. Terrific job 👏 👍 👌 J8m is a real asset to the field. Kudos!

Rob Freuler

1732305365

Benjamin R. did several updates for us, (kitchen sink, faucet, and dishwasher venting), bathrooms (toilets), and new utility sink, faucet, and cleaned up the PVC water pipes with copper in the basement. Everything was done to perfection! Highly recommend him and Kettle Moraine Plumbing Services.

Reliable Service from Installations to Maintenance and Repairs

Boiler Replacement & Installation

Boiler Repairs

Boiler Maintenance & Tune-Ups

BILL'S BULLETIN