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Welsch Heating & Cooling

5.0 5 reviews Hvac Contractor
📍 St. Louis, MO 🕘 Open today Open 24 hours
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In St. Louis, MO

148 service profiles

Hvac Contractor businesses and related repair services are available around St. Louis, MO.

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5.0Rating
5Reviews
0Photos
9Services
Overview

About this business

Welsch Heating & Cooling Co. is a family and locally owned HVAC business serving the Greater St. Louis and St. Charles County area in Missouri since 1895. Welsch Heating & Cooling provides professional residential and commercial heating, air conditioning, and indoor air quality services. Welsch Heating & Cooling features experienced technicians and supports a wide service area including St. Louis City/County and St. Charles County. The business operates with a strong local presence and over 130 years of experience.

Hvac Contractor

Services

Services and categories listed for this business.

Hvac Contractor Heating services Air conditioning services Indoor air quality services Furnace repair Heat pump repair HVAC installation HVAC maintenance 24-hour emergency repair

Location

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Address 2175 Welsch Industrial Ct, St. Louis, MO, 63146
Phone (314) 872-8070
Questions & answers

Helpful answers

Quick answers from this business profile.

What areas does Welsch Heating & Cooling serve?
Welsch Heating & Cooling serves the Greater St. Louis area including St. Louis City/County and St. Charles County in Missouri.
What types of HVAC services does Welsch Heating & Cooling provide?
Welsch Heating & Cooling provides heating, air conditioning, indoor air quality services, installation, maintenance, and repair for residential and commercial systems.

Reviews

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T

Taylor Pflugradt

Aug 15, 2025
5.0

The service tech (Colin) that has been helping us with our AC has been fantastic! He is very kind, responsive, knowledgeable, and has went above and beyond to help us get our unit fixed. You can tell he really cares. Great customer service!

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tim worstell

Aug 19, 2025
5.0

Called John Welsch after business hours to fix my AC Unit. It was 100° outside and John talked me through how to troubleshoot it because he couldn’t repair until morning. Not only did he tell me how to fix it but where to get the part and in less than 45 minutes I had everything back up and working. Highly recommend calling John if you have any issues with your AC. Super helpful.

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Lillian Katz

Sep 24, 2025
5.0

I had a wonderful experience with Welsch Heating and Cooling. David came out to give me a bid. David was very knowledgeable, professional and suggested products that would work for me. He has great customer service skills and answered all my questions. Doug and Dan did a great job. I could tell they had been doing this for a long time and they were very experienced and skilled at their job. When they completed the job they cleaned up and explained how everything worked. I will definitely recommend Welsch Heating and Cooling to all my family and friends.

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Brad Tinnon

Oct 31, 2025
5.0

We contacted Welsch to give us an estimate on running some duct work in our basement as we are finishing it. Denny came out and took a look and had some really great ideas about how to set everything up. We had a very clear idea of the work that was to be done. We hired them and the HVAC guy that came out was phenomenal (sorry I cannot remember his name). He knew exactly what Denny proposed and where everything was going. And he did everything in around three hours. To top it all off, the price was very reasonable. Very grateful for the team at Welsch and they will be our go to for any future HVAC needs. Thank you all!!

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Rob Work

Jul 20, 2024
5.0

I learned a very important lesson this week: A family with a strong woman needs the quiet man to speak up... occasionally... Let me explain.... We bought this house in 2021 that was built in 2000. It was previously owned by an independent, single, strong woman. She was a federal judge. She remodeled the kitchen, living room, bedrooms and bathrooms. She did a great job. Then she sold it to a family run by a strong, business woman (we know, because she happens to be a friend). A strong, business woman, female dominant family bought the house from her. Yes, my family (I married the Asian version of my mother). My wife immediately went to work r...

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