Updated October 2026 · Our Recommended Top 17
Our goal is to connect people with the best local professionals. We scored Ontario hvac companies on more than 25 variables across five categories and analyzed the results to give you a hand-picked list of the best.
= Featured Provider
Best HVAC Company matching for Ontario
Not sure which hvac company to call? Tell us the job. We check the shortlist above against your timeline and budget and connect you with the right one, free.
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Review sources · Google 5.0 (428)
Review sources · Google 4.9 (447)
Best HVAC Companies Serving Ontario
13784 Monte Vista Ave, Chino, CA 91710
Review sources · Google 4.9 (1,205)
Best HVAC Companies Serving Ontario
5623 E Arrow Hwy, Montclair, CA 91763
Review sources · Google 4.9 (992)
Best HVAC Companies Serving Ontario
665 N Central Ave, Upland, CA 91786
Review sources · Google 4.9 (1,698)
Review sources · Google 4.9 (196)
Best HVAC Companies Serving Ontario
615 N Benson Ave, Upland, CA 91786
Review sources · Google 5.0 (132)
Best HVAC Companies Serving Ontario
3811 Schaefer Ave Ste D, Chino, CA 91710
Review sources · Google 4.9 (561)
Best HVAC Companies Serving Ontario
2311 E Locust St, Ontario, CA 91761
Review sources · Google 4.8 (9,022)
Best HVAC Companies Serving Ontario
4375 E Lowell St Ste n, Ontario, CA 91761
Review sources · Google 4.8 (187)
Best HVAC Companies Serving Ontario
4959 Palo Verde St Ste 208C-7, Montclair, CA 91763
Review sources · Google 5.0 (107)
Best HVAC Companies Serving Ontario
1351 S Grove Ave #110, Ontario, CA 91761
Review sources · Google 4.7 (338)
Best HVAC Companies Serving Ontario
8608 Utica Ave Ste 220 RS, Rancho Cucamonga, CA 91730
Review sources · Google 5.0 (49)
Review sources · Google 4.6 (604)
Review sources · Google 5.0 (62)
Review sources · Google 5.0 (5)
Best HVAC Companies Serving Ontario
125 E California St, Ontario, CA 91761
Review sources · Google 4.6 (32)
We pull every hvac company we can find serving Ontario, then score each on five things: availability and service area, licensing and credentials, reputation across review sites, experience, and how they handle a real phone call. Only the top scorers make the list. Featured Providers pay for placement and are labeled; scores are never for sale.
Yes. Call or send the form and we match you with a hvac company from this list at no cost. Featured Providers may pay RatingsMatch for placement, which is why they are labeled.
Listings are earned, not bought. Claim your business at https://www.ratingsmatch.com/claim to correct details and add services. Featured placement is a separate paid option that never changes a rating.