Best Licensed HVAC Contractors in Fullerton, CA
48 HVAC contractors registered in Fullerton hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 937 active C-20 heating and air conditioning licenses in Orange County; 49 registered in Fullerton
- California requires workers' compensation cover for C-20 licensees: 47 of Fullerton's 49 licenses (95.9%) carry a current policy with CSLB
- Median time licensed in Fullerton: 7 years
- Longest Fullerton licensure: since 1971
- 69 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1971
- Expires
- 2027-06-30
- Phone
- (714) 738-5891
- Verified
- August 17, 2026
- Licensed since
- 1974
- Expires
- 2027-11-30
- Phone
- (714) 879-8141
- Verified
- August 17, 2026
- Licensed since
- 1981
- Expires
- 2028-04-30
- Phone
- (714) 738-7036
- Verified
- August 17, 2026
- Licensed since
- 1990
- Expires
- 2027-11-30
- Phone
- (626) 224-8359
- Verified
- August 17, 2026
- Licensed since
- 1990
- Expires
- 2028-02-29
- Phone
- (714) 335-3369
- Verified
- August 17, 2026
- Licensed since
- 1996
- Expires
- 2028-01-31
- Phone
- (714) 328-1996
- Verified
- August 17, 2026
- Licensed since
- 1998
- Expires
- 2027-10-31
- Phone
- (714) 773-5865
- Verified
- August 17, 2026
- Licensed since
- 1999
- Expires
- 2027-06-30
- Phone
- (714) 240-0500
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Gard Inc. DBA Reliable Sheet Metal Works | #272202 | On file | 1971 |
| Hawaiian Air | #299279 | On file | 1974 |
| Pmr Professional Mobil Remodeling Inc. | #411024 | On file | 1981 |
| Thomasville Construction Inc. | #585556 | On file | 1990 |
| Horton's Heating & Air Con | #587686 | On file | 1990 |
| Ace Air Conditioning | #718130 | On file | 1996 |
Orange County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 937 active C-20 heating and air conditioning licenses in Orange County, 49 of them registered in Fullerton. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Fullerton license has been held 7 years, and the longest-standing one dates to 1971. 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: 47 of Fullerton's 49 licenses (95.9%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 937 of the county's 937 licenses carry the same $25,000 bond California sets by statute. 69 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 Fullerton: common questions
How many licensed HVAC contractors are there in Fullerton?
49 active C-20 heating and air conditioning licenses are registered in Fullerton, out of 937 across Orange County. 48 Fullerton-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. 49 active C-20 heating and air conditioning licenses are registered in Fullerton and 937 across Orange County, the longest-standing issued in 1971. 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 47 of Fullerton's 49 currently carry. 69 Orange County licenses expire within 90 days.