



Weis Comfort Systems
Guaranteed Professional Service from St. Louis Heating & Cooling Pros
With more than 40 years of experience with HVAC equipment, our team at Weis Comfort Systems knows a thing or two about providing top-notch repairs and maintenance to our customers. Our St. Louis heating and cooling services include options for furnaces, air conditioners, filtration systems, and other products for home and business-owners alike. We are proud to adhere to a two-hour service window on every appointment, so you never have to wait long for a technician to show up. And with financing options for high-quality brands such as Lennox and Daikin, it’s hard to get a bad deal on installations when you hire the experts at Weis Comfort Systems.
To schedule an appointment with our St. Louis heating and cooling technicians, just dial (636) 202-0073.


Year-Round Comfort


Why Choose Weis?
We'll Keep It Simple!-
Same-Day & 24/7 Services
Broken heater in the middle of the night? Don't get left out in the cold, we'll be there whenever you need us!
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2-Hour Service Window
Say goodbye to waiting around for hours for your tech to arrive! We will give you a 2-hour window and a courtesy call 30 minutes before arrival.
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Free In-Person Estimates
Don't be surprised by "hidden" costs, schedule your FREE in-person estimate to get an honest quote and upfront pricing for your project.


See Why Our customers love us
5-Star Reviews All Around-
“When a 21-year-old system was ready to be replaced, they gave me a very clear estimate that included everything I needed, complete with rebates and a loyalty discount based on a percentage of my maintenance costs in the past.”
- Lori S. -
“Frank M. performed my 6 Month semiannual Maintenance service today on my Geothermal HVAC. He does an excellent job.”
- Ed B. -
“They arrive on time. Jim will take his time and explain everything to me! Having him come out every 6 months to service my heating and cooling system gives me peace of mind all year that my system will be safe and running smoothly!”
- Lucey L.

Your St. Louis Heating & Cooling Experts
Weis Comfort Systems is proud to offer HVAC installation and repair to customers throughout Ballwin, Metro St. Louis, and Southern Illinois. It’s important for home and business-owners to prepare for seasonal changes, but at Weis, we prepare for you. With our excellent maintenance plans, you’ll be prepared year-round, no matter what the weather is like outside. Our goal is to keep you comfortable regardless of your budget, which is why we also offer various specials to make our work even more affordable. And with free in-person estimates available for everyone who contacts us, there’s never a bad reason to call Weis Comfort Systems. Give our St. Louis HVAC company a call today, and find out why customers love us for yourself.
When you hire Weis Comfort Systems, you get:
- Convenient service appointments (that means two-hour timeframes for all service calls!)
- 24/7 and same-day service for emergencies
- A live person answering the phones—each and every time
For more information on what our Metro St. Louis heating and cooling pros can do for you, call (636) 202-0073, or send us a message online.

