Your Comfort is Our Priority

When You Live and Sleep Comfortably, So Do We

We Are Here For You!

Contact Us Today

    5-Star Reviews All Around

    See Why Our Customers Love Us

    Contact Us Today!

    Let’s Get You Comfortable

    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

    Weis Comfort Systems is proud to offer repair, installation, and other services relating to HVAC in St. Louis, Ballwin and across 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 HVAC 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 HVAC coupons and special offers 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 us a call for fast & effective HVAC service in St. Louis 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

    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.

    More Information

    About Us Book Online 636-266-2290