Free estimates on your bath or kitchen remodeling projects

Visit our design center showroom for inspiration.

Mukwonago’s Choice for Heating and Cooling Since 1956


Martens Plumbing & Heating is in its fourth generation and seventh decade as a family-run business. Knowing how important your home is to you and your family, we are committed to helping it function safely, efficiently and reliably. With 65+ years of experience, we are experts in our field and proud of our reputation for top-notch customer service. You can count on us to:

  • Connect you with a person when you call, and follow up quickly.
  • Get the job done properly the first time.
  • Respond promptly to emergency and after-hours calls.
  • Deliver our services on time and on budget, at the best value possible.
  • Meet the highest standards for instal­lation and remodeling by experienced, trained professionals.
  • Guarantee your satisfaction 100 percent. If you’re not happy with your system within one year of instal­lation, we’ll come back and make things right.

See what our customers say about us.

Excellent work. Very knowledgeable and profes­sional technician. Didn’t leave a mess and even got me in a day earlier for a water heater replacement.

Michael B.

Neil came out on an emergency no water call, came out very quickly. Let us know our problem and gave us a solution quick.

Brenton K.

Always prompt, always friendly, always good work.

Ron V.

Great service and excellent staff. My serviceman figured out the plumbing problem right away and did a great job of fixing it! Great local company.

Sharon R.

Great service, and our plumber John was awesome!! Will definitely be requesting him for our next service.

Karlie D.

Dependable and honest!! Suggested a short term solution for AC issue rather than rushing into a whole new system right now. And it worked. Will never use anyone else!!

Jill W.

Martens Plumbing & Heating wants to be your first choice for heating, cooling, plumbing and remodeling needs. Call us today!


Our promise: Urgency, integrity, response and value. While others may focus on one or two of these, we consis­tently deliver on all four. They are the keys to our success and our customers’ satisfaction. Our mission is to continually focus on our customers’ needs through staff training, quality products and exceptional service. This starts with listening to our customers.

Learn More With Martens Minute