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Closed until Sat, 8:00 AM
In the heart of O'Fallon, we are Heritage Heating & Cooling - your reliable HVAC partner. We specialize in HVAC services, air conditioning contrac…
The Best HVAC Company in O'Fallon
Compare top-rated hvac providers in O'Fallon. Profiles include verified reviews, service details, and direct contact options.
Service providers
Home Heating & Cooling
Open today
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 …
HVAC pros near O'Fallon
These companies are based in nearby cities and serve O'Fallon.
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…
Open 6:00 AM – 10:00 PM
In the heart of Fairview Heights, we at Sears Heating and Air Conditioning specialize in comprehensive home solutions. Our expertise lies in air c…
Closed until Mon, 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…
Closed until Mon, 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 …
Closed until Mon, 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…
Closed until Mon, 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…
Closed until Mon, 10:00 AM
At Brunsmann in Belleville, we specialize as premier HVAC professionals, offering exceptional air conditioning services. Our team is dedicated to …
Open 24/7
At Certified HVAC Services in Swansea, we specialize in delivering exceptional heating, ventilation, and air conditioning solutions for our valued…
Closed until Mon, 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…
Closed until Mon, 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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Verified HVAC in O'Fallon, IL
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.
Real reviews for hvac
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.
Local-first search in O'Fallon
Filter by neighborhood, check locations on the map, and find providers close to home or work in O'Fallon. Listings are refreshed regularly — November 2026.
Short drive from O'Fallon, including Fairview Heights
The same listings in the closest cities — providers there often take jobs in O'Fallon too. Mileage is the approximate distance from O'Fallon.
- Fairview Heights 1.1 mi
- Caseyville 3.1 mi
- Swansea 3.4 mi
- Belleville 4.5 mi
- Lebanon 4.8 mi
- Collinsville 5.2 mi
- Sauget 9.1 mi
- Maryville 9.3 mi
- Troy 9.9 mi
- Granite City 11.0 mi
- Edwardsville 11.8 mi
- Mascoutah 11.9 mi
Hiring in 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.
Before you hire
- Read the most recent reviews for your specific type of job.
- Ask about licensing and insurance when required for this trade.
- Get a written estimate for work over a few hundred dollars.
- Confirm availability and any trip or emergency fees upfront.
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