Welsch Heating & Cooling
HVAC contractor in St. Louis, MO.
In Welsch Heating & Cooling's own words
For over a century, Welsch Heating & Cooling has been the trusted name in comfort for the Greater St. Louis area. Since its founding in 1895, this family-owned business has dedicated itself to providing exceptional HVAC services. Their team of skilled technicians carries on a legacy of excellence, ensuring every home and business receives personalized attention and superior care. From furnaces to air conditioning systems, Welsch Heating & Cooling delivers reliable solutions with a commitment to quality that has defined them for generations. Experience the difference
- Trade
- HVAC contractor
- Business address
- 2175 Welsch Industrial Ct, St. Louis, MO 63146
- Telephone
- (314) 872-8070
- Website
- welsch-heatcool.com
- Hours
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- MondayOpen 24 Hours
- TuesdayOpen 24 Hours
- WednesdayOpen 24 Hours
- ThursdayOpen 24 Hours
- FridayOpen 24 Hours
- SaturdayOpen 24 Hours
- SundayOpen 24 Hours
From the business's Google listing, checked Oct 2026
- Register
- MO register
Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the state board.
Google Reviews
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We get our routine maintenance check ups from Welsch every year. Overall, we like their service. This review is about their scheduling practices for this. They use a very old method of sending out a postcard to have you then call them to schedule your routine maintenance visit. This really seems like a waste of time and money. Why would they spend the money to send out a postcard instead of just calling their customers who have already paid for the routine maintenance? Or, why don’t they schedule the maintenance visit when you’re wrapping up your spring maintenance visit? We called in late September and our maintenance visit for our Furnace is December 28. At that point it’s a little bit like, well, do we really need to have a Furnace check up? We do wish they would’ve called a month ago to schedule this instead of letting their postcards run through our poor USPS service and not get to houses for three weeks. *** I have edited this review, and raised it by a star, because after the initial review, they did call back and get us a time in mid October. This is much more reasonable. I still believe sending out the postcard through USPS is not a good way to schedule their customers’ maintenance. ***
David W.
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Its labor day weekend, its 100 degrees, and Friday night our 6 years old AC goes out. It was after hours when we started looking who to call so we didn't expect much. But all the "big name" places routed us thru AI automated answering systems that couldnt seem to understand me saying "Wentzville" with our address. And they all had the same AI Robot service! A good friend recommended Welsch and I got routed immediately to an actual person when I called - who was able to take our info and pass it along to a technician. Next morning the tech was at the house by 730am, within 15-20 mins he had the system fixed after replacing the capacitor. And despite it being emergency repair the cost was very reasonable! Thank you Vincent for saving the day and also giving us some tips on maintaining our AC! We will be calling Tuesday to set up yearly maintenance with Welsch!
Krista B.
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Professional, clean and precise in their installation work, quick, and honest. All around an excellent company to hire for HVAC work
Tim R.
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Chose Welsch based on their positive reviews, and was blown away by their customer service. We had gotten a bid to replace our a/c unit and scheduled the appointment a few weeks out, and our existing, old a/c unit died before our appointment. Welsch brought us a window unit to use in the meantime, then sent someone out to do a temporary fix, which got the unit back up and running (this happened during a heat wave) while we waited to see if they could bump up our installation date. They were able to move our date up by two weeks, and we were cool and comfortable during our wait. The installation guys were great. They were on time, professional, polite, etc. Wonderful experience!
Tony B.
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AC went out at 10pm last night. Called Welsch & they took a message telling us they would call at 7am the next morning. At 7am the called & arrived around 10am & got it working. Prompt service with very nice technicians. Also a union shop which is a plus too.
Patricia L.
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We're very pleased with the transaction from start to finish. They did the initial builder install in our home and now, almost 20 years later, replaced both systems including humidifiers, media filters and Honeywell programable thermostats with an app. The cost was the most reasonable I could find of the HVAC companies that have been around a long time. The service and follow up have been great. Need heating or cooling equipment? Give them a chance. Glad we did.
Beverly M.
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We hired Welsch to upgrade our home’s HVAC system that was over 25 years old. It was great interacting with the sales rep Dylan. Welsch had great pricing and warranty for a full upgrade. The install team, Dan and Mark, arrived on time and did an amazing job on the installation and cleaning up after themselves. My husband was very impressed on how well coordinated the removal and cleaning went. He was also really glad to learn that our techs had many years of experience. It makes us more confident. Also Kudos to the team for working through such a hot day. We felt bad that our install date ended up falling on such a hot and humid day. Looking forward to have them come back to service the units.
Coral R.
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I’ve been using Welsch for over 10 years now. It started when my furnace went out on Christmas Day and it was 10 degrees outside. I called Welsch the next morning and they dispatched their tech Scott immediately. Within a few hours he had parts located, installed, and the furnace working again. Well this time, my A/C decided to fail one afternoon when it was 90 outside with high humidity. I called Welsch and they had their tech Scott here again within 24 hours. Scott arrived in the mid afternoon, troubleshooted the problem, located parts and had the unit up and running before he left in the evening. Definitely a comforting feeling when Scott shows up at your door. Fantastic company that hires dispatchers and technicians who try everything to get your units repaired and working. They will be my first call for any future HVAC needs.
Ryan K.
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worst attitude via phone
Ayman P.
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Steve came out and immediately diagnosed our HVAC issue. He was able to fix it the same day. He was very professional and timely. I would highly recommend Welsch!
Abby B.
About Welsch Heating & Cooling
Air conditioning and heating work from Welsch
Air conditioning and cooling are among the services Welsch Heating & Cooling names for St. Louis. The company says it has worked in heating and air conditioning for more than a century and serves both residential and commercial customers.
Its service lineup includes air conditioning, heat pumps, heating repair, furnace repair, AC repair, maintenance, and indoor air quality work. The company also says it provides emergency help 24/7, including for air-conditioning and furnace problems.
Welsch's rating, reviews, and availability
Reviewers most often mention quick dispatches, timely technicians, successful repairs, installation work, cleanup, and staff professionalism. Some reviewers raise concerns about maintenance scheduling and phone interactions.
The business is open 24 hours a day, seven days a week. Welsch Heating & Cooling also offers financing.
NATE-certified technicians in St. Louis
The company says its technicians are NATE-certified. It describes its work as covering both heating and cooling equipment, from furnace and AC repair to heat pumps and maintenance.
Welsch Heating & Cooling says it has helped St. Louis homes and businesses for more than 100 years.
Services, brands and warranty details come from the company's own website. Ratings, hours and reviews come from Google. Town figures come from the US Census and NOAA.