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St. Louis Plumbing & HVAC Specialists

We Hold Ourselves to a Higher Standard

At Dunn Plumbing, Heating & Air Conditioning, LLC, we are proud to be a Trane Comfort Specialist® dealer. This certification means that we’re held to a higher standard of service, workmanship, and customer care. As St. Louis heating and air conditioning specialists, we provide top-quality installations, repairs, and routine service of all types of HVAC and plumbing equipment, including furnaces, boilers, heat pumps, central ACs, ductless mini-splits, air cleaners, whole-home humidifiers, water heaters, expansion tanks, water softeners, water filters, and more. And we stand behind everything we do with our 100% customer satisfaction guarantee; if you’re not totally happy with our services, we’ll work to resolve the problem or refund your money, no questions asked.

What does it mean to be a Trane Comfort Specialist®?

To become a Trane Comfort Specialist®, contractors must pass Trane’s rigorous certification process.

Trane Comfort Specialist® contractors are committed to:

  • Providing the highest quality installations and services
  • Achieving 100% customer satisfaction
  • Ensuring ongoing employee training
  • Often working with NATE-certified technicians
  • Staying up to date on the latest technology
  • Helping customers maximize their energy efficiency

Our goal is to help you find the right system for your home, one that provides you with the best performance, reliability, and cost savings.

For more information, or to schedule your plumbing, heating, or AC services in St. Louis, Mehlville, Ballwin, Affton, or the St. Louis area, call (314) 476-9606 today.

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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