🐜AssistAnt · Pro directory
There are 209 HVAC companies within 25 miles of O Fallon, MO in the AssistAnt directory as of October 16, 2026, 16 of them based in O Fallon itself. None are verified by AssistAnt yet, so check a business’s license and insurance before you hire it. Verified businesses are listed first, then by distance. No business can pay for a higher spot.
HVAC (heating & air conditioning) near O Fallon
- KirbnJays Heating & Cooling
O’Fallon, MO · 0.5 mi
Not verified yet
(636) 233-1811
- Stay Cool Climate Control
O Fallon, MO · 0.8 mi
Not verified yet
(636) 747-1762
- Rippelmeyer Services
O'Fallon, MO · 1.0 mi
Not verified yet
(636) 240-5400
- One Hour Heating & Air Conditioning
O'Fallon, MO · 1.1 mi
Not verified yet
(314) 899-2022
- Burner Design Services
Saint Peters, MO · 1.1 mi
Not verified yet
(636) 379-4502
- Swiss Air Heating & Cooling, LLC
O Fallon, MO · 1.1 mi
Not verified yet
(636) 337-3008
- AAA Home Services
O Fallon, MO · 1.2 mi
Not verified yet
(636) 397-3200
- RK Heating & Cooling
O Fallon, MO · 1.5 mi
Not verified yet
(636) 242-5335
- Faszold Heating and Cooling
O'Fallon, MO · 1.6 mi
Not verified yet
(636) 259-2756
- Absolute Comfort Systems Heating & Air Conditioning
O Fallon, MO · 1.8 mi
Not verified yet
(636) 978-5600
- Aire Serv Heating & Air Conditiong
O FALLON, MO · 2.0 mi
Not verified yet
(636) 474-3878
- Renaud Brothers Heating & Cooling
O'Fallon, MO · 2.5 mi
Not verified yet
(314) 620-3121
- Air Rescue
O'Fallon, MO · 2.5 mi
Not verified yet
(636) 764-0700
- Sierra Mechanical
O Fallon, MO · 3.1 mi
Not verified yet
(636) 240-8383
- C-n-o Comfort Zone Heating & Cooling
Saint Peters, MO · 3.4 mi
Not verified yet
(636) 209-5087
- AAA Home Services
St Peters, MO · 3.4 mi
Not verified yet
(636) 928-4933
- Hoff Heating & AC
O Fallon, MO · 3.4 mi
Not verified yet
(636) 388-4141
- Fast Fix Commercial Kitchen Services
Saint Peters, MO · 3.5 mi
Not verified yet
(573) 544-0456
- NORDYNE LLC
O Fallon, MO · 3.7 mi
Not verified yet
(636) 561-7300
- Stevenson Heating & Cooling
Saint Peters, MO · 3.9 mi
Not verified yet
(636) 387-1032
- Budget Heating, Cooling & Plumbing
Saint Peters, MO · 4.0 mi
Not verified yet
(636) 887-2800
- Cornerstone Comfort Solutions
St. Peters, MO · 4.1 mi
Not verified yet
(636) 534-1888
- Calumet Cooling LLC
St Peters, MO · 4.3 mi
Not verified yet
(636) 249-6202
- Air Alliance Team
Saint Charles, MO · 4.5 mi
Not verified yet
(636) 498-0051
- Solid Rock
Saint Peters, MO · 4.6 mi
Not verified yet
(314) 267-0536
- Goldkamp Heating & Cooling
Lake Saint Louis, MO · 4.7 mi
Not verified yet
(636) 748-5556
- Complete Service
Saint Peters, MO · 5.0 mi
Not verified yet
(636) 477-7200
- Craigco Heating & Cooling, LLC
O Fallon, MO · 5.0 mi
Not verified yet
(636) 978-5273
- Qualified Heating and Cooling
Weldon Spring, MO · 5.1 mi
Not verified yet
(314) 921-0157
- Anton's Plumbing Heating/cooling & Energy Experts
Weldon Spring, MO · 5.1 mi
Not verified yet
(314) 279-4996
Showing the 30 listed first. Search by ZIP code to see more.
Questions
- How many HVAC companies are near O Fallon, MO?
- 209 within 25 miles, 16 in O Fallon, as of October 16, 2026.
- Which HVAC companies near O Fallon, MO are verified?
- None yet. Verified means AssistAnt checked the business registration and insurance; unverified listings come from public business records.
- Can a business pay to rank higher on AssistAnt?
- No. Verified businesses are listed first, then everyone else by distance. Placement cannot be bought, and AssistAnt never sells your contact information.
More in O Fallon
- Appliance repair in O Fallon, MO50 businesses
- Dryer vent cleaning in O Fallon, MO8 businesses
- Used appliances in O Fallon, MO10 businesses
- Plumbers in O Fallon, MO123 businesses
- Electricians in O Fallon, MO110 businesses
- Roofers in O Fallon, MO281 businesses
- Landscaping & lawn care in O Fallon, MO324 businesses
- Cleaning services in O Fallon, MO226 businesses
- Pest control in O Fallon, MO79 businesses
- Painters in O Fallon, MO84 businesses
- Garage door repair in O Fallon, MO70 businesses
- Handyman services in O Fallon, MO48 businesses
- Pool & spa service in O Fallon, MO29 businesses
- Concrete, masonry & paving in O Fallon, MO107 businesses
- Fence contractors in O Fallon, MO22 businesses
- Gutter services in O Fallon, MO22 businesses
- Chimney sweep & repair in O Fallon, MO14 businesses
- Junk removal in O Fallon, MO9 businesses
- Home inspectors in O Fallon, MO43 businesses
- Flooring in O Fallon, MO41 businesses
- Windows & doors in O Fallon, MO56 businesses
- Home security systems in O Fallon, MO32 businesses
- Remodeling contractors in O Fallon, MO141 businesses
- Insulation contractors in O Fallon, MO14 businesses
- Towing in O Fallon, MO60 businesses
- Auto repair in O Fallon, MO612 businesses
- Collision repair & auto glass in O Fallon, MO154 businesses
- Welding & fabrication in O Fallon, MO92 businesses
- Machine shops & CNC in O Fallon, MO69 businesses
- Computer & phone repair / IT in O Fallon, MO132 businesses
- Excavation & heavy equipment in O Fallon, MO15 businesses
- Trucking in O Fallon, MO41 businesses
Nearby towns
- Lake Saint Louis, MO 5 mi
- St Peters, MO 5 mi
- Weldon Spring, MO 5 mi
- Lake St Louis, MO 6 mi
- Wentzville, MO 10 mi
- Saint Charles, MO 10 mi
- Chesterfield, MO 11 mi
- Earth City, MO 12 mi
- Foristell, MO 13 mi
- Bridgeton, MO 14 mi