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  1. Home
  2. Illinois
  3. O'Fallon
  4. HVAC

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

Heritage Heating & Cooling

Heritage Heating & Cooling

5

From $50

Up to $500

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…

0 local residents requested quote requests

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Home Heating & Cooling

Home Heating & Cooling

5
Open today

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 …

0 local residents requested quote requests

View details

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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 — August 2026.

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HVAC near me in O'Fallon, IL - August 2026

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

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  • Ask about licensing and insurance when required for this trade.
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  • Confirm availability and any trip or emergency fees upfront.

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    Yes. Browsing businesses, reading reviews, and comparing providers is free for everyone. Business owners can create a basic listing at no cost.

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  • How do I choose the right pro?

    Start with ratings and recent reviews, then compare services offered, location, and response time. Contact two or three providers to get quotes before making a decision.

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  • How often is information updated?

    Business owners update their own profiles. Our team also refreshes hub pages and removes inactive listings so search results stay current.

What O'Fallon customers say about local pros

  • Kevin Fouty
    Kevin Fouty

    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

  • John Hughes
    John Hughes

    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.

  • Nick
    Nick

    Great team. Knowledgeable, friendly, and quick. Cannot recommend them enough!

  • Maryann Brickey
    Maryann Brickey

    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.

  • Hannah Hunter
    Hannah Hunter

    Brian came within allotted window. He was helpful and professional. Thanks!

  • Scott Borchers
    Scott Borchers

    The technician did an outstanding job of explaining the maintenance and assisting me with optimizing my humidifier function.

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