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Mukwonago’s Choice for Heating and Cooling Since 1956

Martens Plumbing & Heating has been a family-owned business for generations—so we know how important your family is to you. That’s why we offer high-quality heating and cooling systems and service at rates that you can afford. With more than 60 years of experience working in heating and air conditioning, we’re experts in the field—and we’re extraordinarily qualified to serve our customers.

Our main goal is to be your first choice for all your heating, cooling, and plumbing needs—by offering you superior products and HVAC service at the best value possible. Our certified Bryant® technicians are trained in state-of-the-art installation and HVAC repair procedures. It doesn’t matter if you have an emergency, repair, or plumbing work—we’re here to help.

The Martens Difference

We want our customers to be completely satisfied with every service we offer. We take pride in offering real emergency service, with an actual person available to take your call and dispatch a technician to address your problem.

Many home plumbing issues appear when you least expect it. We understand that HVAC repairs or plumbing emergencies don’t happen on a nine-to-five schedule—and how these unexpected inconveniences can affect your family routine. That’s why we’re available around the clock to handle these emergencies at no extra charge. We can take your call anytime because we work on your schedule.

More Than Just Heating and Cooling

Martens also offers full plumbing services, including expert bathroom and kitchen remodeling. Whether you need a plumbing repair, sewer and piping, or water treatment services, we have you covered. You can expect exceptional service from our certified technicians and master plumbers.

One and Done Service

No matter what you need, Martens Plumbing is right here--and right for you. We promise to get the job done the first time around, so you can get back to your busy life. Trust us for reliable, skilled service every time. Contact us today to get started.

24/7 Emergency Service Available

Why Choose Us

  • Serving Mukwonago since 1956
  • Three generations of experience
  • Proven track record
  • Family-owned and -operated
  • 24/7 live answer
  • Emergency service
  • Superior one-stop services
  • We work on your schedule
  • Fast, professional service
  • Competitive, affordable rates
  • Only the best technicians and plumbers
  • "We have used Martens for years for A/C and furnace maintenance. In the past had them remodel a bathroom, replace furnace, replace thermostat, install water heater, and water purifying systems. Have confidence in their work."

    Piroska F.

  • "We have been using Martens for over 25 years and have always been very happy with their professionalism, communication, products, and services. They not only provide the maintenance/service called for, but also provide suggestions for what I as the homeowner can do to maintain or extend the life of my system."

    Nancy B.

We meet your furnace, boiler, and other heating system needs with top-notch equipment, parts, and service. We service all major brands and install only the best.

Our six decades of experience mean cooler, comfortable homes for our neighbors. See us for heat pumps, ductless, and central air systems from the best brands.

We deliver the best possible experience for our residential and commercial plumbing customers, thanks to our highly trained and experienced plumbers.

We provide complete bathroom and kitchen upgrades and remodeling services, from design to walk-through. Visit our onsite design center showroom for inspiration!