Best Licensed HVAC Contractors in San Dimas, CA
20 HVAC contractors registered in San Dimas hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 2,674 active C-20 heating and air conditioning licenses in Los Angeles County; 21 registered in San Dimas
- California requires workers' compensation cover for C-20 licensees: 20 of San Dimas's 21 licenses (95.2%) carry a current policy with CSLB
- Median time licensed in San Dimas: 14 years
- Longest San Dimas licensure: since 1968
- 206 county licenses reach their expiration date within 90 days
We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.
- Verified
- August 17, 2026
- Licensed since
- 1968
- Expires
- 2026-12-31
- Phone
- (626) 631-2116
- Verified
- August 17, 2026
- Licensed since
- 1988
- Expires
- 2028-01-31
- Phone
- (909) 971-8440
- Verified
- August 17, 2026
- Licensed since
- 1991
- Expires
- 2027-04-30
- Phone
- (909) 816-5627
- Verified
- August 17, 2026
- Licensed since
- 1992
- Expires
- 2028-06-30
- Phone
- (626) 969-7700
- Verified
- August 17, 2026
- Licensed since
- 1997
- Expires
- 2027-01-31
- Phone
- (909) 394-9545
- Verified
- August 17, 2026
- Licensed since
- 1999
- Expires
- 2027-05-31
- Phone
- (951) 830-3400
- Verified
- August 17, 2026
- Licensed since
- 2005
- Expires
- 2027-03-31
- Phone
- (909) 821-0151
8.R C S
- Verified
- August 17, 2026
- Licensed since
- 2008
- Expires
- 2028-07-31
- Phone
- (626) 622-7497
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Ward's Heating & Air Conditioning | #254919 | On file | 1968 |
| Athena Engineering Inc. | #523044 | On file | 1988 |
| Rain Bow Heating & Air Inc. | #613976 | On file | 1991 |
| Dms Air Conditioning Inc. | #647493 | On file | 1992 |
| J B Kitchens Baths & Design Inc. | #730976 | On file | 1997 |
| Schultz Electric | #762677 | On file | 1999 |
Los Angeles County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 2,674 active C-20 heating and air conditioning licenses in Los Angeles County, 21 of them registered in San Dimas. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median San Dimas license has been held 14 years, and the longest-standing one dates to 1968. 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: 20 of San Dimas's 21 licenses (95.2%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 2,672 of the county's 2,674 licenses carry the same $25,000 bond California sets by statute. 206 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 San Dimas: common questions
How many licensed HVAC contractors are there in San Dimas?
21 active C-20 heating and air conditioning licenses are registered in San Dimas, out of 2,674 across Los Angeles County. 20 San Dimas-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. 21 active C-20 heating and air conditioning licenses are registered in San Dimas and 2,674 across Los Angeles County, the longest-standing issued in 1968. 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 20 of San Dimas's 21 currently carry. 206 Los Angeles County licenses expire within 90 days.