Plumbing, Heating, and Cooling Needs?We can help!
Over 90 Years of Excellence

When you are looking for a quality contractor, look for one that has been around for a long time. As the granddaughters of the founder, we recognize the need for a quality service company that is above all the others and have made this our top priority.

We provide fast solutions to your problems. With our upfront pricing policy, we are able to eliminate surprises. We value your time and will make an appointment according to your schedule. We proudly serve the Milwaukee, Ozaukee and Waukesha counties.

– Jennifer and Cheryl Knauer


Plumbing services and solutions for every type of issue. From common clogs to a full mainline replacement.

Heating & Cooling

Recommended by industry leaders as specialists in hot water and steam heat systems, forced air and oil. All your needs for repair or installation.

Indoor Air Quality

Home comfort systems for any room in your house. From humidification to dehumidification, cleaning systems and filters.
Why Choose Us
Quality Products

The products we recommend and use are of great quality. You’ll appreciate a service provider that does the homework to find the best products and you’ll have master certified technicians to install them correctly and maintain them for many years to come.

Pride in What We Do
We take as much pride in your home as you do. We are your neighbors and your friends. We have been making friends for over 90 years.
What Our Clients Say
  • Knauer Plumbing, Heating & Cooling has provided maintenance and installation service to us since 2002. An air conditioning system installed in 1986 continues to function, thanks to annual maintenance service. They installed a new furnace in 2002 and continue annual maintenance service. We couldn’t be more pleased with Knauer’s customer focus, accommodation, recommendations and service.
    Lee Horlitz, Milwaukee
  • My husband and I have called upon Knauer Plumbing, Heating and Air Conditioning for over 25 years of professional, reliable service. They helped us find the right furnace for our home when it finally needed replacing, and their technicians kept our older air conditioner happily running. Plumbing problems and updates in a 92 year old home are no match for the expertise of the Knauer plumbers, either.
    Kathy Barry, Wauwatosa
  • I have been a customer of Knauer Plumbing, Heating and Cooling, Inc. for more than 50 years. Kevin put in our new furnace in 2005 and a Rheem air conditioning system. Buzz also replaced two hot water heaters in our home. My Mom and Dad were also customers for many years. Love the company!!
    Richard Paulini, Grafton