Your Comfort is Our Priority

When You Live and Sleep Comfortably, So Do We

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5-Star Reviews All Around

See Why Our Customers Love Us

"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.

Year-Round Comfort

Our Services

AC Services

All AC Services

Heating Services

All Heating Services

Indoor Air Quality

All Indoor Air Quality

Plumbing

All Plumbing Services

Contact Us Today!

Let’s Get You Comfortable

Call Us: 636-266-2290 Schedule a Consultation

We'll Keep It Simple!

Why Choose Weis?

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.

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!

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.

Approved Installers
for Sam's Club

We are the trusted install partner of Sams Club.

Your St. Louis Heating & Cooling Experts

About Weis Comfort Systems

At Weis Comfort Systems, we aim to make your home or business as comfortable as possible while providing professional craftsmanship, warranties, and value. Since WWII, our family has helped you to have a dependable HVAC system. That’s why we’re the St. Louis area’s go-to HVAC services provider for home and business owners.

Brothers Tom and Dan Weis continue the legacy of service and dependability. We are dedicated to upholding our family’s tradition of high-quality service and business values to each of our customers.

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We also offer convenient and superior HVAC maintenance plans and free in-person estimates.

Request quick & effective repair, installation, or other service relating to HVAC in St. Louis by

Contacting Us Online or Calling 636-266-2290 Today!

We'll Keep It Simple!

Our Special Offers

Learn About
Our Maintenance Plans

Prevent damages and expensive repair while increasing the lifespan of your home comfort system with a maintenance plan from Weis!

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Refer Your Friends and
Earn Rewards!

Weis Comfort Systems is proud to offer an excellent referral program in Ballwin, the greater St. Louis Metro area, and parts of Southern Illinois to help our customers save as much as possible.

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