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Welsch Heating & Cooling

Verified Business
HVAC Repair
Location St. Louis, MO
5.0
( 5 reviews )
Open
โ€ข Write a Review
Location 2175 Welsch Industrial Ct, St. Louis, MO, 63146, United States

Hours of Operation

Open 24 Hours
Sunday
24 Hours
Monday
24 Hours
Tuesday
24 Hours
Wednesday
24 Hours
Thursday
24 Hours
Friday
24 Hours
Saturday (Today)
24 Hours

Holiday Hours: Please call ahead during holidays as hours may vary.

Featured Services

Heating services

Air conditioning services

Indoor air quality services

Furnace repair

Heat pump repair

HVAC installation

HVAC maintenance

24-hour emergency repair

Heating services

No images available

Contact for Service

Air conditioning services

No images available

Contact for Service

Indoor air quality services

No images available

Contact for Service

Furnace repair

No images available

Contact for Service

Heat pump repair

No images available

Contact for Service

HVAC installation

No images available

Contact for Service

HVAC maintenance

No images available

Contact for Service

24-hour emergency repair

No images available

Contact for Service

Frequently Asked Questions

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.

About Welsch Heating & Cooling

Verified

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.

Customer Reviews

5.0
5 reviews
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!

T

tim worstell

Aug 19, 2025
5.0

Called John Welsch after business hours to fix my AC Unit. It was 100ยฐ outside and John talked me through how to troubleshoot it because he couldnโ€™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.

L

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.

B

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!!

R

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 remodeling the house. We had the deck and back patio enlarged, with steps added. We added an office to the basement and put new flooring and paint throughout. We had the whole upstairs repainted, as well as the garage and garage floor coated. Bottom line is we have spent a lot of $$ doing all this. So why do I tell you this? Well... UP UNTIL TODAY THE HOUSE STILL HAD IT'S ORIGINAL A/C & FURNACE! It had so many hack jobs on it that I started calling it "Frankin-Furnice." Because everytime it broke down the "strong" women would get the cheapest laborer in here to hack away to get it "blowing" again. The previous owner tried to tell me her home warranty put a whole new unit in. They did not. They only put a new coil in. BTW... Home Warranties are always a ripoff! They get the cheapest labor in to do a hack job. So after spending this whole week panting around the house with my pugs, and 10 fans running, because our AC was out again, I put my foot down: "NO! We need a whole new unit this time!" (I found it is a lot easier to win arguments with your wife when she is in Brazil). I called Welsch Heating & Cooling yesterday and they put in a new unit this morning. Now I sit in a nice cool home, worry free and functioning just how it should be. If you live in St Louis and need a new AC, give Welsch a call. This is the second install they put in one of our units and they do a superb job.

5.0

Based on 5 reviews

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!
T

tim worstell

Aug 19, 2025
5.0
Called John Welsch after business hours to fix my AC Unit. It was 100ยฐ outside and John talked me through how to troubleshoot it because he couldnโ€™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.
L

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.
B

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!!
R

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 remodeling the house. We had the deck and back patio enlarged, with steps added. We added an office to the basement and put new flooring and paint throughout. We had the whole upstairs repainted, as well as the garage and garage floor coated. Bottom line is we have spent a lot of $$ doing all this. So why do I tell you this? Well... UP UNTIL TODAY THE HOUSE STILL HAD IT'S ORIGINAL A/C & FURNACE! It had so many hack jobs on it that I started calling it "Frankin-Furnice." Because everytime it broke down the "strong" women would get the cheapest laborer in here to hack away to get it "blowing" again. The previous owner tried to tell me her home warranty put a whole new unit in. They did not. They only put a new coil in. BTW... Home Warranties are always a ripoff! They get the cheapest labor in to do a hack job. So after spending this whole week panting around the house with my pugs, and 10 fans running, because our AC was out again, I put my foot down: "NO! We need a whole new unit this time!" (I found it is a lot easier to win arguments with your wife when she is in Brazil). I called Welsch Heating & Cooling yesterday and they put in a new unit this morning. Now I sit in a nice cool home, worry free and functioning just how it should be. If you live in St Louis and need a new AC, give Welsch a call. This is the second install they put in one of our units and they do a superb job.

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Services & Offerings

8 services

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Frequently Asked Questions

2 Questions

Find answers to common questions about Welsch Heating & Cooling.

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.

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Location

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2175 Welsch Industrial Ct, St. Louis, MO 63146

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