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  • Welsch Heating & Cooling

Why Us

We strive to be the best heating and air conditioning company in the St. Louis/St. Charles area with over 120 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

Save up to $1,600 back!

Get it Fixed By Expert Technicians

Call anytime for home or business!

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

Thanks for your help today!  Our AC is back in working order.

Lisa D.

Welsch Heating and Cooling has always been a great company for my family’s HVAC needs. Pure professionals!

JDO

By the way, Welsh just installed a new system (furnace and a/c) in my father’s town house in Eureka. His a/c went out during the height of the August heat wave. Denny Turlin was our sales rep. As always, we got great service from Denny and your company!

Brad J.

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Service & Emergencies: (314) 567-6347 Call Today!

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