Best Licensed HVAC Contractors in Oak Hills, CA
14 HVAC contractors registered in Oak Hills hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 644 active C-20 heating and air conditioning licenses in San Bernardino County; 15 registered in Oak Hills
- California requires workers' compensation cover for C-20 licensees: 14 of Oak Hills's 15 licenses (93.3%) carry a current policy with CSLB
- Median time licensed in Oak Hills: 14 years
- Longest Oak Hills licensure: since 2002
- 70 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2002
- Expires
- 2028-07-31
- Phone
- (909) 930-1866
- Verified
- August 17, 2026
- Licensed since
- 2006
- Expires
- 2028-05-31
- Phone
- (714) 360-6162
- Verified
- August 17, 2026
- Licensed since
- 2007
- Expires
- 2027-01-31
- Phone
- (626) 831-2312
- Verified
- August 17, 2026
- Licensed since
- 2008
- Expires
- 2027-05-31
- Phone
- (909) 223-4546
- Verified
- August 17, 2026
- Licensed since
- 2008
- Expires
- 2028-07-31
- Phone
- (800) 535-8071
- Verified
- August 17, 2026
- Licensed since
- 2008
- Expires
- 2026-10-31
- Phone
- (888) 588-8801
- Verified
- August 17, 2026
- Licensed since
- 2009
- Expires
- 2027-07-31
- Phone
- (909) 467-5332
- Verified
- August 17, 2026
- Licensed since
- 2011
- Expires
- 2027-10-31
- Phone
- (951) 204-3724
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Innovative Mechanical Services Inc. | #810868 | On file | 2002 |
| Xtreme Air Technologies Inc. | #878051 | On file | 2006 |
| Top Notch Heating And A/c | #889523 | On file | 2007 |
| Southland Mechanical Inc. | #917453 | On file | 2008 |
| Aaces Heating Air Conditioning And Swamp Coolers | #918978 | On file | 2008 |
| Crestline Refrigeration | #923343 | Expired on file | 2008 |
San Bernardino County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 644 active C-20 heating and air conditioning licenses in San Bernardino County, 15 of them registered in Oak Hills. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Oak Hills license has been held 14 years, and the longest-standing one dates to 2002. 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: 14 of Oak Hills's 15 licenses (93.3%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 644 of the county's 644 licenses carry the same $25,000 bond California sets by statute. 70 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 Oak Hills: common questions
How many licensed HVAC contractors are there in Oak Hills?
15 active C-20 heating and air conditioning licenses are registered in Oak Hills, out of 644 across San Bernardino County. 14 Oak Hills-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. 15 active C-20 heating and air conditioning licenses are registered in Oak Hills and 644 across San Bernardino County, the longest-standing issued in 2002. 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 14 of Oak Hills's 15 currently carry. 70 San Bernardino County licenses expire within 90 days.