Updated October 2026 · Our Recommended Top 17
Our goal is to connect people with the best local professionals. We scored Castro Valley 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 Castro Valley
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 4.9 (389)
Best HVAC Companies Serving Castro Valley
1930 W Winton Ave #4, Hayward, CA 94545
Review sources · Google 4.9 (164)
Review sources · Google 4.9 (148)
Best HVAC Companies Serving Castro Valley
1946 Republic Ave, San Leandro, CA 94577
Review sources · Google 4.9 (150)
Best HVAC Companies Serving Castro Valley
275 Maud Ave, San Leandro, CA 94577
Review sources · Google 4.8 (61)
Best HVAC Companies Serving Castro Valley
22962 Clawiter Rd #24, Hayward, CA 94545
Review sources · Google 4.9 (43)
Review sources · Google 5.0 (19)
Review sources · Google 4.8 (39)
Review sources · Google 5.0 (19)
Best HVAC Companies Serving Castro Valley
4026 Castro Valley Blvd, Castro Valley, CA 94546
Review sources · Google 4.6 (19)
Review sources · Google 5.0 (3)
Best HVAC Companies Serving Castro Valley
2544 Castro Valley Blvd, Castro Valley, CA 94546
Review sources · Google 4.0 (31)
Review sources · Google 5.0 (1)
Review sources · Google 4.3 (90)
Best HVAC Companies Serving Castro Valley
3295 Castro Valley Blvd #104, Castro Valley, CA 94546
Review sources · Google 5.0 (9)
Best HVAC Companies Serving Castro Valley
21776 Dolores St, Castro Valley, CA 94546
Review sources · Google 4.3 (6)
Best HVAC Companies Serving Castro Valley
889 W A St, Hayward, CA 94541
Review sources · Google 4.0 (12)
We pull every hvac company we can find serving Castro Valley, 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.