Your Comfort is Our Priority

When You Live and Sleep Comfortably, So Do We

We Are Here For You!

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5-Star Reviews All Around

See Why Our Customers Love Us

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Let’s Get You Comfortable

We'll Keep It Simple!

Why Choose Weis?

Free In-Person

Don't be surprised by "hidden" costs, schedule your FREE in-person estimate to get an honest quote and upfront pricing for your project.

Call us for Help 24/7

Emergencies don't wait for normal business hours, so neither do we! We are here to answer your call 24 hours a day, 7 days a week.

2-Hour Service

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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Fast, Online Financing
Options Available

A dependable air conditioner or heater is something that everybody needs. However, a major service can be a huge financial burden.

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Book Online About Us 636-266-2290