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  • Welsch Heating & Cooling

Why Us

We strive to be the most TRUSTED Heating and Air Conditioning Company in the St. Louis/St. Charles area with over 125 years of experience

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

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Specials on Heating and Cooling Complete Systems

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Living Up to Our Commitment

See what made us a national winner!

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

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.

I could not be happier with my decision to use Welsch.

Jeff C.

Very fast installation Our gas furnace replacement was completed in less than 2 hours! Everything was cleaned up and working in about half the time I expected.

Very fast installation

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