Hire the #1 HVAC Specialists in O’Fallon, Missouri

O’Fallon residents can now feel comfortable knowing they have trusted HVAC services just around the corner. Assured Heating and Cooling are your go-to experts for quality heating and cooling in the area. With our knowledgeable technicians providing comprehensive service, you will get fast and reliable installation, maintenance, or repair of any system you may need.

We understand that a properly functioning furnace or A/C system is essential to comfortable living, so we take extra care to ensure you’re taken care of. Our top priority is to ensure our customers feel safe and secure with the best quality of care at the most affordable rates. Let us help make sure your home stays cool in the summer and warm in those chilly winter months.

A Full-Service Company for Your HVAC Needs

Assured Heating and Cooling is here to make your home comfortable! We know that maintaining and repairing your heating and cooling system can be daunting, so we take on all the hard work. The services we offer include the following:

  • HVAC Maintenance: Regular maintenance is the key to the proper functioning of your HVAC system. Our team of professionals will inspect your unit’s components, including air filters, dampers, and thermostats. We’ll keep them in optimal condition, so you don’t have to worry about unexpected problems.
  • Repair & Installation Services: If your unit needs repairs or a replacement, our experienced technicians can help. We offer dependable repair and installation services for all types of HVAC models. No matter what you need, Assured Heating and Cooling has the knowledge and experience to get it done right.


The Experts You Can Trust

Assured Heating and Cooling is the premier HVAC company in O’Fallon, MO. With years of experience, we strive to provide excellent heating and cooling services and customer satisfaction. Our team of certified specialists works hard to ensure that we exceed your expectations every time.



With over 15 years of experience in the HVAC industry, we are confident that we have the skills and knowledge to take excellent care of your central air systems, ensuring reliable, long-lasting performance. We work hard to put your health and well-being first regarding indoor air quality, so you can rest assured knowing that you’re in good hands.


Latest Tools & Techniques

At Assured Heating and Cooling, we stay up to date on the latest tools and techniques in HVAC. Our technicians have completed extensive training to easily and accurately handle any service. We use top-of-the-line diagnostic equipment to diagnose problems quickly and accurately.

No matter what your HVAC needs may be, Assured Heating and Cooling is the team you can trust for all of your heating and cooling services in O’Fallon, MO.

Let Our Team Take Care of Your HVAC in O’Fallon, MO

Welcome to Assured Heating and Cooling, where we provide quality service and customer satisfaction when it comes to heating and cooling services. After more than 15 years of experience, our professionals are ready to serve the O’Fallon residents with excellent workmanship and extraordinary customer care.

Our commitment is to ensure you are comfortable in your home during any season. We understand how important it is for you to have a properly functioning AC and furnace, so we strive every day for perfect results—with every service we provide. Put your trust in us, your local experts at Assured Heating and Cooling!