Updated October 2026 · Our Recommended Top 17
Our goal is to connect people with the best local professionals. We scored Union City 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 Union City
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.
Mon–Fri 6am–4pm PT · Operated by BaaDigi
Best HVAC Companies Serving Union City
27343 Industrial Blvd Ste H, Hayward, CA 94545
Review sources · Google 4.9 (195)
Review sources · Google 4.9 (389)
Review sources · Google 4.9 (148)
Best HVAC Companies Serving Union City
Review sources · Google 5.0 (75)
Best HVAC Companies Serving Union City
3266 Investment Blvd, Hayward, CA 94545
Review sources · Google 4.8 (1,125)
Review sources · Google 5.0 (42)
Best HVAC Companies Serving Union City
2323 Royal Ann Dr, Union City, CA 94587
Review sources · Google 4.8 (86)
Review sources · Google 4.9 (37)
Review sources · Google 5.0 (19)
Best HVAC Companies Serving Union City
34492 Torrey Pine Ln, Union City, CA 94587
Review sources · Google 4.8 (20)
Best HVAC Companies Serving Union City
4236 Solar Cir, Union City, CA 94587
Review sources · Google 4.8 (24)
Review sources · Google 5.0 (13)
Review sources · Google 5.0 (12)
Review sources · Google 4.2 (176)
Best HVAC Companies Serving Union City
1801 Decoto Rd, Union City, CA 94587
Review sources · Google 5.0 (4)
Review sources · Google 5.0 (1)
Best HVAC Companies Serving Union City
Review sources · Google 5.0 (2)
We pull every hvac company we can find serving Union City, 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.