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

What Our Clients Are Saying

Our experience w/ SCCC has been fabulous once again!
carrie moore
Cole was a pleasure to work with. He demonstrated expertise and uncovered crucial issues with my system.
Nick Forrest
The guy who came was very informative and professional
Mike Marre
Replaced entire HVAC system . Group was professional, knowlegable, cusotmer focused, and experts of their trade. I would certainly recommend Stay Cool for HVAC services .
Ray Tober
Outstanding service from Stay Cool Climate Control. This is the only company that service my HVAC. Pricing is fair and reasonable and they ensure that the work is safely and meticulously done to my satisfaction. Thumbs up to Cole and Jeremy performing a root cause analysis on my furnace.
Kayode Akinbobola
I received an estimate for a new heat pump. They were very thorough and did everything to get me the best price and options.
Scott Lueck
This company is amazing. I would never use another company after our experience with Stay Cool. They repaired our old unit a could of years ago, buying us time to save for a new unit. When we called them to get a quote for the new unit they got us the best pricing and warranty for their top of the line package. There installation professionals are top notch.
Melaina Gautieri
Cole and Jacob were here to install a new duct air cleaning system and to do winter maintenance check. They replaced main filter and water board for the humidifier. They kept me informed throughout the process and went through all the updated equipment. They explained what to watch for with new filter and when to call if needed. Great work and very pleased with how quickly I could get this appointment. Definitely will refer this company and team to family or friends. Thanks Stay Cool.
Janet G
The Stay Cool Team was amazing! We are finishing our basement and needed duct and vents installed before we could finish framing. We called last week and they were able to get us scheduled quickly (within a couple of days). They showed up on time, were very professional and discussed the project before starting work to ensure that they had an understanding of our goals which helped identify work that we had missed in our initial communication. They completed the installation within one day and did a fantastic job. I would highly recommend Stay Cool Climate Control and will use them on future projects.
Angela Dean

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

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.

New Furnace and AC installation Wentzville Missouri #StayCool

Near Bear Claw Ct, Wentzville, MO 63385
Wentzville, MO - New Furnace and AC installation Wentzville Missouri #StayCool
Nathan B.

Nathan B.

Furnace making weird noise in st.peters mo

Near Wood Path Ln, St. Peters, MO 63376
St. Peters, MO - Furnace making weird noise in st.peters mo
Jacob A.

Jacob A.

Furnace repair St Peter’s Missouri #StayCool

Near Wood Path Ln, St. Peters, MO 63376
St. Peters, MO - Furnace repair St Peter’s Missouri #StayCool
Cole W.

Cole W.

Mini Split Installation in Lake St Louis

Near Shady Village Ct, Lake Saint Louis, MO 63367
Lake Saint Louis, MO - Mini Split Installation in Lake St Louis
Luke B.

Luke B.

Mini Split Install! #StayCool

Near Shady Village Ct, Lake Saint Louis, MO 63367
Lake Saint Louis, MO - Mini Split Install! #StayCool

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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