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HVAC Contractors in Alton, IL

10 HVAC professionals listed. Compare services, websites, service areas, and direct contact options.

10contractors listed

10websites available

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10 results

American Air Heating & Cooling

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (618) 243-7591
Business location: Business location: 191 N Old St Louis RdClosed

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Barrett Heating & Cooling, Inc.

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (618) 465-3731
Listed in: Listed in: Alton, IL

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Den-Son Inc. Cooling & Heating

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (618) 372-8375
Listed in: Listed in: Alton, IL

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Gene's Appliance AC & Heating

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (618) 462-6732
Listed in: Listed in: Alton, IL

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Janssen Heating Cooling Plumbing & Insulation

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (618) 541-2415
Listed in: Listed in: Alton, IL

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Kane Mechanical Group, LLC

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (618) 254-0681
Listed in: Listed in: Alton, IL

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King Air Conditioning & Heating

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (618) 466-7574
Listed in: Listed in: Alton, IL

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McCormick Heating & Cooling & Appliance Repair

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (618) 462-7422
Listed in: Listed in: Alton, IL

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Tomlin Heating and Air

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (314) 319-9678
Listed in: Listed in: Alton, IL

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Ty's Heating & Cooling LLC

Alton, IL

Unclaimed listing Checked Aug 2026 Website from public listing data, not independently confirmed

AC Repair
Emergency HVAC
Heating Repair
HVAC Maintenance

Phone: (309) 280-6210
Listed in: Listed in: Alton, IL

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Hiring and service guidance

Common HVAC needs in Alton

Alton homeowners and property managers commonly compare contractors for furnace repair, AC repair, seasonal maintenance, emergency no-heat calls, ductwork, and indoor air quality work. Use the cards below to shortlist local and nearby HVAC companies, then confirm service area, availability, license details, and current pricing directly with each business.

What to check before hiring in Alton

Contact details: Use phone numbers and websites as a starting point, then confirm hours, services, and licensing directly with the contractor.
Owner updates: Claimed listings may include validated owner-source details subject to source precedence.
Services: Confirm the contractor handles your specific heating, cooling, ductwork, or indoor air quality need.
Emergency availability: Ask whether after-hours or weekend heating and cooling help is available.
Get multiple estimates: Contact at least 2-3 contractors before choosing.

Confirm the contractor's service areaBusiness addresses do not always match the cities a contractor serves. Confirm coverage directly before scheduling.

Own or manage an HVAC company? Claim your listing for free to keep phone, website, service-area, and service details current. Claim or update listing