CGM Local · HVAC
HVAC in O'Fallon
Compare HVAC contractors in O'Fallon, or tell us what’s going on and get quotes.
What do you need in O'Fallon?
Air Quality
Service & Specialty
28 hvac in O'Fallon · 5 list furnace repair & install
CGM Local in O'Fallon
No reviews yet
Brefeld Plumbing and HeatingBrefeld Plumbing and Heating in IL.
Trenton, IL
Furnace Repair & Install
No reviews yet
Miller Heating & Cooling Inc."You need a dependable heating and air conditioning contractor to keep your home comfortable all yearround, and that's why Waterloo, IL, res
Waterloo, IL
No reviews yet
St. Louis Heating and Air ConditioningSt. Louis Heating and Air Conditioning in MO.
Saint Louis, MO
No reviews yet
Vasill Heating and Air ConditioningVasill Heating and Air Conditioning in MO.
Saint Louis, MO
No reviews yet
StaffQuickStaffQuick in IL.
Glen Carbon, IL
AC RepairFurnace Repair & InstallNew System Installation+1
No reviews yet
B & W Heating & CoolingSince 1949, B & W Heating & Cooling has been a trusted HVAC company in Wood River, delivering dependable heating and cooling services for ge
Edwardsville, IL
No reviews yet
Inman Heating & CoolingInmanHeating Cooling has been Southern Illinois’ first choice for heating and cooling service for the past 50 years. As a family-owned busin
Columbia, IL
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Frequently Asked Questions
How do I find a good HVAC contractor in O'Fallon?
Compare the HVAC contractors listed in O'Fallon by ratings, reviews and license, or fill in the quote form and contractors near you will reach out with prices.
How much does HVAC repair cost?
Most repairs run about $150 to $600 — a capacitor or ignitor is on the low end, a compressor or heat exchanger much higher. A new system usually costs several thousand dollars. Ask for the price after the diagnosis.
Do HVAC contractors need a license?
In most states, yes, and anyone handling refrigerant needs EPA 608 certification. Ask for the license number before work starts.
What do HVAC contractors do?
Air conditioning, furnaces, heat pumps and boilers; duct cleaning, ductwork and air quality; new systems, thermostats and maintenance plans. Pick a service above to find contractors that offer it.
How many HVAC contractors are listed in O'Fallon?
There are currently 28 HVAC contractors listed in O'Fallon on CGMIMM.
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