Compare top-rated hvac providers in O'Fallon. Profiles include verified reviews, service details, and direct contact options.
From $50
Up to $500
Open 24/7
In the heart of O'Fallon, we are Home Heating & Cooling, a dedicated team specializing in HVAC services. For over two decades, we've been serving …
From $50
Up to $500
Closed until Tue, 6:00 AM
In the heart of O'Fallon, we are Heritage Heating & Cooling - your reliable HVAC partner. We specialize in HVAC services, air conditioning contrac…
These companies are based in nearby cities and serve O'Fallon.
From $50
Up to $500
Open 24/7
At Classic Aire Care in Fairview Heights, we're your go-to experts for all HVAC services. We specialize in air conditioning contracting and repair…
From $50
Up to $500
Closed until Tue, 6:00 AM
In the heart of Fairview Heights, we at Sears Heating and Air Conditioning specialize in comprehensive home solutions. Our expertise lies in air c…
From $50
Up to $500
Closed until Tue, 7:00 AM
In Fairview Heights, we are Hills Heating and Cooling LLC, your reliable HVAC specialists. For over a decade, we've been providing top-tier HVAC s…
From $50
Up to $500
Closed until Tue, 8:30 AM
In Caseyville, we are Tettaton - your go-to HVAC specialists. We pride ourselves on delivering reliable and efficient heating solutions that keep …
From $50
Up to $500
Closed until Tue, 8:00 AM
At Tabor Heating and Cooling in Swansea, we specialize in HVAC services. With a focus on HVAC contracting, our team is committed to delivering rel…
From $50
Up to $500
Closed until Tue, 7:00 AM
At Garrett Heating & Cooling in Caseyville, we specialize in HVAC services, focusing on air conditioning and heating solutions for your home. As a…
From $50
Up to $500
Closed until Tue, 10:00 AM
At Brunsmann in Belleville, we specialize as premier HVAC professionals, offering exceptional air conditioning services. Our team is dedicated to …
From $50
Up to $500
Open 24/7
At Certified HVAC Services in Swansea, we specialize in delivering exceptional heating, ventilation, and air conditioning solutions for our valued…
From $50
Up to $500
Closed until Tue, 7:00 AM
In the heart of Lebanon, we're Bel-O Cooling & Heating - your reliable partner in home comfort. For over four decades, we've been committed to del…
From $50
Up to $500
Closed until Tue, 8:00 AM
At St. Louis Clean Air in Belleville, we specialize in HVAC services, making us your go-to choice for all things related to heating, ventilation, …
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We show only active businesses that pass moderation. Results are specific to O'Fallon and nearby service areas, and inactive profiles are removed to keep the list current.
Ratings and reviews come from customers who used the service. Compare hvac pros in O'Fallon by experience, responsiveness, and value before you reach out.
Filter by neighborhood, check locations on the map, and find providers close to home or work in O'Fallon. Listings are refreshed regularly — September 2026.
The same listings in the closest cities — providers there often take jobs in O'Fallon too. Mileage is the approximate distance from O'Fallon.
Looking for hvac in O'Fallon? This page lists verified local providers with ratings, reviews, and contact options. We show active businesses only — profiles are moderated and updated by owners.
Compare pros by experience, price range, and customer feedback. Many providers offer free estimates or same-day service for common requests. Use filters and the map to find someone close to your address.
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Outstanding service! Heritage Heating & Cooling is a top notch company that outs service first. I highly recommend Heritage & Cooling for all of your HVAC needs. I appreciated the prompt service appointment and professional employees. Brian had my AC up and running in no time. I also value that it is a Veteran company that provides a military discount. It's the only place I will call for my HVAC needs. Thank you Heritage & Cooling
Being a first time home buyer I wanted someone to help walk me through the ins and outs of our heating and cooling system. I reached out to Heritage Heating & Cooling and they sent over Brian who was incredibly helpful. He was able to check everything in our house and give me a better understanding on how our system works. Brian did a fantastic job checking everything for us and provide us excellent service. We will be using Heritage Heating & Cooling for our future needs and would highly recommend them to others.
Great team. Knowledgeable, friendly, and quick. Cannot recommend them enough!
Extremely prompt and professional service. We reached out about about broken AC in the morning on one of the hottest days of the year, and the tech arrived within just a couple of hours and had us fixed in less than a half hour.
Brian came within allotted window. He was helpful and professional. Thanks!
The technician did an outstanding job of explaining the maintenance and assisting me with optimizing my humidifier function.
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