The Best HVAC & Air Conditioning in Ontario, California
10 top-rated HVAC contractors in Ontario and the immediate area, ranked by our own assessment of reputation and track record. No ads disguised as rankings — just the providers worth calling, with a number you can tap.
Top 8 in Ontario
Ranked by reputationGet a quote from a local shop
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Common questions
How are these Ontario HVAC contractors ranked?
We rank HVAC contractors using our own editorial assessment of each one's reputation and how established it is in the community, drawn from publicly available signals and local knowledge. Providers with a weak reputation are kept out of the top of the list. This is an independent guide — businesses don't pay to be ranked (a paid placement, if any, is always labeled "Featured").
How much does AC repair cost in Ontario, CA?
A service call and diagnostic from a local HVAC contractor typically runs $75 to $200, with common repairs (capacitor, refrigerant, fan motor) adding to that. Full system replacement is a much larger job quoted per home. Given the Inland Empire's summer heat, ask about response time when you call.
Which Ontario HVAC contractors are open and taking calls now?
Every business on this page is an active, independently reviewed local provider with a working phone number. Tap the call button on any listing to reach them directly.
New to hiring HVAC contractors? Read our guide: How to Choose an HVAC Contractor in the Inland Empire →