Save More With Our Specials

$100 OFF

Air Purification

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$50 OFF

Whole Home Humidifier

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$25 OFF

First Service

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Why Choose Us as Your O’Fallon HVAC Company?

When you work with us you can be confident that you will receive personalized solutions tailored to your needs, goals, and budget. 

Our O’Fallon heating and AC technicians will take the time to listen to your needs and offer the best options for your home. We continue to stay up to date on the latest processes and technologies, and complete over 100 hours per year of continued education for safety and equipment–so you can be confident that you will be working with professionals who have your best interests in mind.

Serving the Complete Heating and Air Conditioning Needs of O’Fallon, Missouri

Stay Cool Climate Control offers full-service heating, air conditioning, and air quality solutions throughout the O’Fallon, MO area.

Our services include:

We also provide:

  • Free HVAC inspections on future home purchases

  • Water heater safety checks (included with furnace installation)

  • Thermostat labor and set-up included on new system installations

  • Safety concern recommendations

  • Virtual diagnostics (when applicable)

  • AC/Heater Loaner Program

  • Humidity testing

Gold Stars

What Our Clients Are Saying

Reasons To Choose


Personal Attention

From the moment we answer the phone until the completion of the project, we will make sure your experience with us is simple, straightforward, and stress-free.


Honest Service

Our foundation is built on honesty and integrity. All of our services are backed by fair pricing, high-quality workmanship, and a team that takes pride in delivering exceptional results.


Peace of Mind Guaranteed

We use state of the art equipment and tools and continue to keep up with industry standards, practices, and advancements to ensure your peace of mind with every job.

Give us a call today for heating, cooling, and indoor air quality services you can trust in O’Fallon, MO.

Real Time Service Areas

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You get the best and
quality service

Don’t hesitate to reach out to us for the comprehensive solutions you need. We are happy to discuss any concerns you may have and will provide the honest, professional advice you need to help you make the best decision for your home.

Contact us today to schedule a free second opinion, request an estimate, or book an immediate appointment for heating and air conditioning services in O’Fallon, Missouri.

Contact Us Today!

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