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Our Awards

Exceptional Plumbing & HVAC Service in St. Louis & Beyond

At Dunn Plumbing, Heating & Air Conditioning, LLC, we make it our mission to provide a level of service that not only meets our customers’ expectations but exceeds them. Our commitment to excellence has helped us earn numerous awards from prestigious home service organizations over the years.

Some of our many accomplishments include:

  • Trane Comfort Specialist™ dealers
  • Trane Excellence in Customer Service 2013, 2014
  • Trane Rising Star Award 2013
  • Mitsubishi Diamond Dealers
  • Mitsubishi Summer Top Volume Dealer, St. Louis Region
  • North American Technician Excellence (NATE) certified
  • HomeAdvisor Screened & Approved
  • HomeAdvisor Pro 2015
  • EPA-608 Certification for HVAC Technicians
  • Building Performance Institute (BPI) Certified Professionals
  • Heat Exchanger Experts®
  • Spire (Laclede Gas) partners
  • Better Business Bureau (BBB) Accredited Business
  • BBB A+ rating
  • National Comfort Institute (NCI) partners
  • Air Conditioning Contractors of America members
  • Angie’s List Super Service Award 2014
  • Angie’s List A Rating
  • Angie’s List Gold Service Award
  • Ameren Missouri ActOnEnergy Excellence in Energy Efficiency Award 2014
  • Best of Ballwin 2015
  • The Home Depot VIP Service Provider

Though we are proud to have been honored in our industry, we are most proud of all the ways in which we’ve helped homeowners in the St. Louis region stay comfortable and safe all year ‘round. At Dunn Plumbing, Heating & Air Conditioning, LLC, we strive to give back to our customers, our community, and our world at large by dedicating our time and resources to providing exceptional services that are affordable, environmentally friendly, and designed to last.

Need heating, air conditioning, or plumbing services in St. Louis, Mehlville, Ballwin, Affton, or the surrounding areas? Contact us today at (314) 476-9606!

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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