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About Dunn Plumbing, Heating & Air Conditioning, LLC

Trusted Plumbing & HVAC Experts in St. Louis, Serving Mehlville, Ballwin, Affton & Beyond

At Dunn Plumbing, Heating & Air Conditioning, LLC, we take great pleasure and pride in providing solutions to your indoor comfort challenges. We’re an independent Trane Comfort Specialist™ dealer, which allows us to offer the best products in the industry, and our team is dedicated to providing you with the highest attention to detail and superior customer service.

Our company provides expert plumbing, heating, and air conditioning service in St. Louis, Mehlville, Ballwin, and Affton. Our team of technicians is fully qualified to help you select the comfort system that best fits your home and your budget. Plus, we stand behind all the work we do with our written 100% satisfaction guarantee—if you’re not happy with our services for any reason, we’ll make it right or give your money back, no questions asked! Whether you need furnace repair, AC repair, water heater replacement, AC maintenance, air cleaner installation, or anything plumbing, heating, or air conditioning-related, you have our guarantee.

Giving Back to Our Community & Our World

Along with the services we provide, we’re also passionate about our duty to protect the environment and our social responsibility to the community. In our daily practices, we utilize earth-friendly products and methods to ensure clean outdoor and safe indoor environments for the people we serve.

We regularly give back to the community through volunteer work and financial donations. Among the charitable organizations we support are Safe Kids USA, National Multiple Sclerosis Society, Autism Speaks, and the Sheriffs’ Association.

Our Management Team

Dunn Plumbing, Heating & Air Conditioning, LLC is made up of a team of committed people who are ready to assist you take the hassle out of choosing a plumbing, heating, and cooling company. A Dunn Plumbing, Heating & Air Conditioning, LLC technician is devoted to a higher standard.

Get to know our team!

Our Awards

Here at Dunn Plumbing, Heating & Air Conditioning, LLC, we’ve built our reputation on enthusiastic service, quality products, and community involvement. For service and support you can count on all year long, Dunn Plumbing, Heating & Air Conditioning, LLC has you covered.

See our awards here!

Make Us Your First Choice for Home Comfort!

At Dunn Plumbing, Heating & Air Conditioning, LLC we understand that your home comfort is important, as is the condition of your home. We treat your home with the same respect you do.

Our technicians live and work to a higher standard. We wear booties in the home, lay down tarps over floors, clean up after we are done, and do not smoke any tobacco products on homeowners’ properties. Our goal is to arrive on time, fix the problem quickly, and leave no trace of our presence—except for the added comfort and energy savings.

Rest assured you are working with a company that places great emphasis on hiring qualified, background-checked individuals. We do the work for you and only send highly trained, professional, and trustworthy technicians to your home. With our 100% satisfaction guarantee, you’re covered.

Call us at (314) 476-9606 or contact us online for reliable heating, air conditioning, and plumbing services in St. Louis, Mehlville, Ballwin, Affton, and the surrounding areas.

Customers Love Us

See What They Had to Say
  • “First of all, I've been using this company for years and since they continually serve me well I decided to post online. Brett and his team are extremely knowledgeable of HVAC. He showed me how to save ...”

    - A Satisfied Customer
  • “Brett with Dunn installed a new HVAC system in my home in December of 2010. He presented several options to me, along with rebates, incentive programs and financing options. We chose to install a ...”

    - A Satisfied Customer
  • “Dunn replaced a water heater and an AC/heat unit. Dunn and its team provided optimal customer service. Brett was detailed about the unit’s function and most importantly, the TOTAL cost, which ...”

    - Juan G.
  • “Last year we found out we needed a new AC unit but waited until this year to fix it. We went through Home Depot to find a place and they gave us Dunn Heating & Cooling. I am glad they did. Scott came ...”

    - Elaine S.
  • “Brett is very knowledgeable in this field and is a great problem solver. He was able to fix our system cheaper and with better quality than the other companies who had looked at the same system. Out ...”

    - Paul W.
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