• FAMILY AND LOCALLY OWNED SINCE 1895

Why Us

We strive to be the most TRUSTED Heating and Air Conditioning Company in the St. Louis/St. Charles area with over 127 years of experience

  • 24-hour service, 7 days a week Repair, optimize, or check your system
  • Any Brand, Any System We service all brands!

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Living Up to Our Commitment

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What We Offer

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Your Comfort Company
Over a Century of Experience

We’ve had more than 100 years to apply our expertise to take care of your heating and cooling needs. Committed to quality customer care, our technicians continue to service the Greater St. Louis area just as current president George "Butch" Welsch’s great-grandfather did when he started The Welsch Furnace Company (now Welsch Heating and Cooling Company) in 1895. Welsch Heating and Cooling Company has received numerous awards and recognition for service excellence, civic responsibility and overall performance as a business leader in the St. Louis area and our commitment to our customers and to the community thrives today.

Reviews

Hi Carol – just a note to let you know how much I appreciate the customer service of Welsch Heating and Cooling – didn’t know how to email your husband, so I thought I would let you know. Yesterday – Sunday – my heater quit (it is not quite 1...

Linda M.

A service tech came out today and looked at my residential boiler and was very helpful.  He is a wealth of information and did a great job.

Erik E.

Rick did an outstanding job of assessing my needs, making appropriate suggestions, and fielding follow-up questions in a timely manner. The install crew was efficient and completed the install by early afternoon. While the crew did remove all the old components the basement floor could have used a sweeping –...

Larry M.

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