HVAC & heating in Ontario, CA
27 HVAC & heating listed in Ontario, California. 26 with a phone number and 23 with a website.
Ontario accounts for 1% of the HVAC & heating listed in California and ranks #30 among California cities for HVAC & heating.
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Quick answer
Ontario, CA has 27 HVAC & heating listed on USA Business Search. 26 list a phone number and 23 list a website. The most listings are in ZIP codes 91761, 91762, 91764.
Updated October 2026Ferguson
US Air Conditioning Distributors
Air Control Specialties Inc.
American Standard Water Heaters
Power Pro Plumbing Heating & Air
A-1 Radiator and Air Conditioning
Ac Quality 100
Air Control Specialties
Air Control Systems
Ama Heater And A/c Repair
Amcot Cooling Tower Co.
Asap Air Conditioning Co
Attic Control
Fenco Heating and Cooling
Insulation Distributors Incorporated
Konwin Inc
Macawesome
Macawsome Heating & Cooling
Montchez Cool Breeze
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Nexgen Hvac & Plumbing
Ontario Refrigeration Services Inc
Pure Eco Inc.
Sierra Insulation Contractors
Sky Systems Co
So Cal Mechanical
United Rentals - Climate Solutions
How to choose an HVAC company in Ontario
- Ask for a load calculation before you replace a system, not just a size match.
- Compare efficiency ratings (SEER2/AFUE) and available rebates.
- Ask what maintenance plans cost and what they cover.
Check the license: Contractors State License Board (CSLB). In California, most home improvement work above the state's small-job limit requires a CSLB license. Look the number up before you sign, and check that it is active and bonded.
Common questions
How many HVAC & heating are listed in Ontario, California?
USA Business Search shows 27 HVAC & heating in Ontario. 26 list a phone number and 23 list a website.
Which ZIP codes do these listings cover?
They include ZIP codes 91761, 91762, 91764.
How do I choose an HVAC company in Ontario?
Ask for a load calculation before you replace a system, not just a size match. Compare efficiency ratings (SEER2/AFUE) and available rebates. Check the license with the Contractors State License Board (CSLB).
How do HVAC & heating in Ontario compare with the rest of California?
Ontario has 1% of the 4,729 HVAC & heating listed in California, which ranks #30 among California cities for this category.
How do I add or fix a listing?
Listings are free. Use Add your business, or the Claim or fix link on any listing.
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