HVAC (heating & air conditioning) in Alton, IL

There are 162 HVAC companies within 25 miles of Alton, IL in the AssistAnt directory as of October 16, 2026, 3 of them based in Alton 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 Alton

• Barrett Heating & Cooling, Inc. Alton, IL · 0.5 mi Not verified yet (618) 465-3731
• Lee Heating & Cooling Alton, IL · 1.5 mi Not verified yet (618) 960-9078
• McCormick Heating & Cooling Alton, IL · 2.7 mi Not verified yet (618) 377-0923
• Kane Mechanical Group, Llc East Alton, IL · 4.0 mi Not verified yet (618) 254-0681
• Advanced Heating Cooling and Refrigeration Wood River, IL · 4.4 mi Not verified yet (618) 216-6213
• American Air Heating & Cooling Wood River, IL · 4.6 mi Not verified yet (618) 243-7591
• Greg's Service Inc. Wood River, IL · 4.7 mi Not verified yet (618) 345-5921
• jen mechanical Godfrey, IL · 4.8 mi Not verified yet (618) 433-1720
• B & W Heating & Cooling, Inc. Wood River, IL · 5.1 mi Not verified yet (618) 254-0645
• King Air Conditioning & Heating Godfrey, IL · 5.5 mi Not verified yet (618) 466-7574
• Bush Refrigeration Godfrey, IL · 5.5 mi Not verified yet (618) 467-0177
• Kenan St. Louis, MO · 7.5 mi Not verified yet (314) 332-8216
• Bertels And Company Heating & Cooling, Tim Bertels - Proprietor Moro, IL · 8.6 mi Not verified yet (618) 377-9008
• Mr. Heating & Cooling St Louis, MO · 9.1 mi Not verified yet (314) 486-7193
• Ward, Inc. Florissant, MO · 9.7 mi Not verified yet (314) 382-2888
• Reliable AF Heating and Cooling LLC Brighton, IL · 9.9 mi Not verified yet (618) 946-9920
• Goldkamp Heating & Cooling Florissant, MO · 10.4 mi Not verified yet (314) 936-2206
• Nu-Way Heating and Air Conditioning Florissant, MO · 10.5 mi Not verified yet (314) 830-1144
• True Comfort Heating & Cooling Moline Acres, MO · 10.6 mi Not verified yet (636) 688-7873
• Ace Service Experts Florissant, MO · 10.6 mi Not verified yet (314) 328-8112
• Click Heating & Cooling Florissant, MO · 10.7 mi Not verified yet (314) 837-3737
• B & B Heating & Cooling Florissant, MO · 10.8 mi Not verified yet (314) 838-9800
• Jackson Heating And Cooling Brighton, IL · 11.2 mi Not verified yet (618) 372-3444
• Mcfarland Indoor Comfort Services Granite City, IL · 11.5 mi Not verified yet (618) 403-6324
• Action Heating & Cooling Bellefontaine Neighbors, MO · 11.8 mi Not verified yet (314) 388-2665
• Elm Heating & Air Conditioning Inc. Granite City, IL · 11.8 mi Not verified yet (618) 931-0847
• Grimes Heating and Air Conditioning Hazelwood, MO · 11.9 mi Not verified yet (314) 521-0074
• Knowles Services St. Louis, MO · 12.3 mi Not verified yet (314) 521-0284
• Mr. Comfy HVAC Granite City, IL · 12.7 mi Not verified yet (618) 974-4971
• Hoffmann Brothers Edwardsville, IL · 12.7 mi Not verified yet (618) 271-6200

Showing the 30 listed first. Search by ZIP code to see more.

Questions

How many HVAC companies are near Alton, IL?

162 within 25 miles, 3 in Alton, as of October 16, 2026.

Which HVAC companies near Alton, IL 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 Alton

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• Remodeling contractors in Alton, IL94 businesses
• Towing in Alton, IL93 businesses
• Auto repair in Alton, IL711 businesses
• Collision repair & auto glass in Alton, IL164 businesses
• Motorcycle, marine & small engine repair in Alton, IL26 businesses
• Welding & fabrication in Alton, IL105 businesses
• Machine shops & CNC in Alton, IL69 businesses
• Computer & phone repair / IT in Alton, IL129 businesses
• Trucking in Alton, IL70 businesses

Nearby towns

• East Alton, IL 4 mi
• Wood River, IL 5 mi
• Godfrey, IL 5 mi
• Moro, IL 9 mi
• Florissant, MO 9 mi
• Brighton, IL 10 mi
• Moline Acres, MO 11 mi
• Bellefontaine Neighbors, MO 12 mi
• Hazelwood, MO 12 mi
• Granite City, IL 13 mi

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