Business Details
Emergency
services
Open 24/7
always available
Trusted HVAC Services in St. Louis Since 1895
Welsch Heating & Cooling has been a trusted name in the St. Louis community for over 125 years, providing expert heating, ventilation, and air conditioning services. Founded in 1895 by George 'Butch' Welsch's great-grandfather, our family-owned business combines century-old tradition with modern technological advancements. Our team of NATE-certified technicians delivers 24/7 emergency services, specializing in furnace and AC installation, repair, and maintenance for residential and commercial clients. We pride ourselves on personalized service, offering tailored solutions for unique heating and cooling challenges while maintaining a commitment to quality and customer satisfaction.With numerous industry awards and a reputation built on reliability, we service all brands and systems, ensuring optimal performance through regular maintenance and cutting-edge indoor air quality solutions. Our dedication to the community is reflected in our long-standing partnerships and customer-centric approach, making us the preferred HVAC provider for generations of St. Louis residents.
Services
Furnace Installation
AC Repair
Heat Pump Services
Ductless Mini Splits
Geothermal Systems
Commercial HVAC
Indoor Air Quality
Thermostat Services
Emergency Repairs
System Maintenance
Highlights and features
- We offer 24/7 emergency HVAC services with rapid response times
- Our NATE-certified technicians service all brands and systems
- Family-owned since 1895 with century-old industry expertise
- We provide customized solutions for residential and commercial HVAC needs
- Award-winning service with proven reliability and customer satisfaction
What people say
Exemplary service
Prompt, neat service
Professional installation
24/7 emergency availability
Knowledgeable technicians
Services
Furnace Installation
Our expert technicians install high-efficiency furnaces tailored to your home's needs. We offer gas, electric, and hybrid systems with proper sizing calculations for optimal performance. All installations include system testing and manufacturer warranty registration, ensuring reliable winter operation while maintaining energy efficiency standards.
AC Repair
We diagnose and fix all air conditioning issues with same-day service availability. Our technicians handle refrigerant leaks, compressor failures, and electrical problems while maintaining system integrity. Emergency repairs include diagnostic testing and component replacement using factory-approved parts for all major brands.
Heat Pump Services
We provide comprehensive heat pump solutions including installation, repair, and seasonal maintenance. Our services cover both air-source and geothermal systems with proper refrigerant management and efficiency optimization. Technicians perform coil cleaning, electrical checks, and thermostat calibration to ensure year-round temperature control.
Commercial HVAC
Our commercial division handles large-scale heating and cooling systems with minimal business disruption. Services include system audits, preventive maintenance contracts, and emergency repairs for office buildings, restaurants, and retail spaces. We specialize in multi-zone systems and energy-efficient retrofits for commercial properties.
Indoor Air Quality
We improve indoor air quality through professional installation of air cleaners, humidifiers, and ventilation systems. Our solutions address allergens, humidity control, and ventilation needs with programmable thermostats and smart home integration options. Services include system diagnostics and performance testing for residential and commercial environments.
People
George Butch Welsch
President
Fourth-generation HVAC leader continuing family legacy since 1895. Oversees operations with focus on maintaining traditional values while implementing modern technologies. Active in community development and industry associations.
Questions
Do you offer 24/7 emergency HVAC services?
Yes, we provide 24-hour emergency heating and air conditioning repair services with rapid response times for urgent system failures.
What HVAC brands do you service?
We service all major HVAC brands for both residential and commercial systems, including installation, repair, and maintenance.
Are maintenance agreements available?
Yes, our Annual Maintenance Agreement includes bi-annual system checks, filter replacements, and priority service scheduling for $178.95 per year.
Do you handle commercial HVAC projects?
Yes, we specialize in commercial HVAC services including system audits, installations, and emergency repairs for businesses of all sizes.
What areas do you service?
We serve the entire St. Louis metropolitan area including St. Charles, offering both residential and commercial HVAC solutions.
Are financing options available?
Yes, we offer financing options for new system installations and major repairs. Contact our office for current promotional programs.
Reviews (6)
Bruce David
Sep 02, 2022
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Welsch just installed new HVAC systems in our Mechanic's shop and Body shop. They also installed new radiant heat in our Mechanic's shop. I would highly recommend their professional sales and service staff, they really care about their customers. We couldn't be happier!!!
Matt Vollmer
Jun 16, 2022
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I worked with David G. to replace a 2.5 ton unit that serviced our newborns 2nd floor room. Ultimately we didn't choose Welsch, the only reason being a slightly longer lead time than a competitor (3 vs 5-7 business days, both of which are great when triple digits are in the forcast). David showed up on time, was responsive to our questions, and was all around great to work with. The pricing he delivered was straightforward, cost competitive, and clearly defined.
I would recommend my service experience with them to a friend, and if the needs arises, call them for my own future HVAC needs. tldr: If the experience was good enough to write a review online even when they didn't win our business, its pretty clear their customer service is top notch all around.
I would recommend my service experience with them to a friend, and if the needs arises, call them for my own future HVAC needs. tldr: If the experience was good enough to write a review online even when they didn't win our business, its pretty clear their customer service is top notch all around.
Patrick Canale
Jun 11, 2022
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I strongly recommend NOT using this company! 0 stars. During a yearly maintenance call (I was not having ANY issues at all) turned very $$$$ After the tech left, I had a broken ac unit and Welch wants $2500 and claims bad timing. Again my ac worked perfectly fine until 2 hrs after the tech left. Horrible business - STAY AWAY and company policy is "bad timing"
Matt Young
May 29, 2022
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New customers for a commercial space with an ac issue. Donnie came out and took great care of us! He was professional, thorough and had us running in top shape fast. Definitely recommend Welsch for your hvac needs!
Marc Bernstein
May 19, 2022
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Top Notch. One particularly hot weekend our prior service simply was not answering the phone--even after having recently repaired the AC. Welsch came that day--fixed a problem that in retrospect had been present for quite some time and the system has been flawless since. I even offered to replace the system as it is getting up there and he gave me the honest opinion to wait! Now they are our team. Prompt, reliable, available, courteous, effective, competitive.very happy with the switch to Welsch. Follow-up: 3 years later--sticking with Welsch; great company!
Charile Adams
May 15, 2022
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Welsch's install team did a great job installing a new HVAC system for our home. Our AC went out about 10 days ago and with the heat index forecast I was very worried. They were able to get a team out to do our install this morning and had it done by 12:30 pm. They did amazing work with every detail done beautifully. I highly recommend Welsch for any HVAC work you may need. 5 star service all the way.
