Your Trusted Heating and Air Conditioning Experts in O’Fallon, Missouri

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 Heating and Air Conditioning Company?

Choosing us as your furnace and ac repair service company guarantees that you will receive personalized solutions tailored to your air conditioning and heating needs, goals, and budget. 

Our heating and AC technicians in O’Fallon, Missouri 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 in 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 Heating and AC 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


What Our Clients Are Saying

Licensed, Bonded & Insured
Reasons To Choose

Heating and Air Conditioning Experts in O’Fallon, O’Fallon HVAC
Heating and Air Conditioning Experts in O’Fallon, O’Fallon HVAC

Personal Attention

From the moment we answer the phone until the completion of the project, as your trusted O’Fallon, MO heating and air conditioning company, 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 O’Fallon, MO HVAC 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

Local Reviews

Stay Cool Climate Control Rated 5.0 out of 5 stars based on 2 customer reviews

Great service

Review of Stay Cool Climate Control

Jeremy got us taken care of quickly when our ac went out. Great company with quality service

O'FallonMO63366 38.8125-90.7075

Fabulous Service

Review of Stay Cool Climate Control

During a heat wave they were able to get me in sooner than my appointment time. Jeremy was professional, informative and a pleasure to work with

O'FallonMO63368 38.76-90.7725

Jacob A.

Jacob A.

Ready for AC service O’Fallon Missouri #StayCool

Near Sonderen St, O'Fallon, MO 63366
O'Fallon, MO - Ready for AC service O’Fallon Missouri #StayCool
Daniel R.

Daniel R.

Wentzville High efficiency Amana S install

Near Wenstone Crossing Way, Wentzville, MO 63385
Wentzville, MO - Wentzville High efficiency Amana S install
Jacob A.

Jacob A.

New system AC cleaning and maintenance O’Fallon Missouri #StayCool

Near Jamesport Dr, O'Fallon, MO 63366
Braden B.

Braden B.

Air conditioning maintenance commercial O’Fallon, Missouri

Near Veterans Memorial Pkwy, O'Fallon, MO 63366
O'Fallon, MO - Air conditioning maintenance commercial O’Fallon, Missouri

You get the best and
quality service

Don’t hesitate to reach out to us for the comprehensive solutions you need. Our heating and air conditioning experts in O’Fallon, MO 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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