Best Licensed HVAC Contractors in Union City, CA
9 HVAC contractors registered in Union City hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 273 active C-20 heating and air conditioning licenses in Alameda County; 9 registered in Union City
- California requires workers' compensation cover for C-20 licensees: 8 of Union City's 9 licenses (88.9%) carry a current policy with CSLB
- Median time licensed in Union City: 17 years
- Longest Union City licensure: since 2000
- 20 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2000
- Expires
- 2028-01-31
- Phone
- (510) 648-3922
- Verified
- August 17, 2026
- Licensed since
- 2003
- Expires
- 2027-10-31
- Phone
- (650) 326-0750
- Verified
- August 17, 2026
- Licensed since
- 2007
- Expires
- 2027-04-30
- Phone
- (510) 206-8576
- Verified
- August 17, 2026
- Licensed since
- 2007
- Expires
- 2028-07-31
- Phone
- (510) 682-8449
- Verified
- August 17, 2026
- Licensed since
- 2008
- Expires
- 2028-04-30
- Phone
- (510) 489-2382
- Verified
- August 17, 2026
- Licensed since
- 2009
- Expires
- 2027-04-30
- Phone
- (510) 475-5700
- Verified
- August 17, 2026
- Licensed since
- 2013
- Expires
- 2027-09-30
- Phone
- (570) 861-6185
- Verified
- August 17, 2026
- Licensed since
- 2018
- Expires
- 2026-12-31
- Phone
- (408) 502-4201
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Ez Air Control | #773869 | On file | 2000 |
| Dynamic Technical Solutions | #826782 | On file | 2003 |
| Air Excel Inc. | #894167 | On file | 2007 |
| Rabboni Mechanical Inc. | #896131 | On file | 2007 |
| A J Heating & Cooling Inc. | #921382 | On file | 2008 |
| Azer Heating & Cooling | #930848 | On file | 2009 |
Alameda County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 273 active C-20 heating and air conditioning licenses in Alameda County, 9 of them registered in Union City. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Union City license has been held 17 years, and the longest-standing one dates to 2000. California law requires workers' compensation cover for C-20 licensees, so it is a legal baseline rather than a way to tell two contractors apart: 8 of Union City's 9 licenses (88.9%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 273 of the county's 273 licenses carry the same $25,000 bond California sets by statute. 20 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.
HVAC Contractors in Union City: common questions
How many licensed HVAC contractors are there in Union City?
9 active C-20 heating and air conditioning licenses are registered in Union City, out of 273 across Alameda County. 9 Union City-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license HVAC contractors?
Yes. California licenses contractors by classification, and C-20 is the CSLB classification that authorises this work. 9 active C-20 heating and air conditioning licenses are registered in Union City and 273 across Alameda County, the longest-standing issued in 2000. Only CLEAR, unexpired licenses appear here.
How do I check an HVAC contractor's license in California?
Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which California requires of C-20 licensees and 8 of Union City's 9 currently carry. 20 Alameda County licenses expire within 90 days.