Best Licensed HVAC Contractors in National City, CA
14 HVAC contractors registered in National 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.
- 850 active C-20 heating and air conditioning licenses in San Diego County; 14 registered in National City
- California requires workers' compensation cover for C-20 licensees: 12 of National City's 14 licenses (85.7%) carry a current policy with CSLB
- Median time licensed in National City: 7 years
- Longest National City licensure: since 2001
- 69 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2001
- Expires
- 2027-08-31
- Phone
- (619) 247-5639
- Verified
- August 17, 2026
- Licensed since
- 2007
- Expires
- 2027-07-31
- Phone
- (619) 474-8921
- Verified
- August 17, 2026
- Licensed since
- 2010
- Expires
- 2028-02-29
- Phone
- (619) 856-5533
- Verified
- August 17, 2026
- Licensed since
- 2011
- Expires
- 2026-12-31
- Phone
- (619) 635-3279
- Verified
- August 17, 2026
- Licensed since
- 2012
- Expires
- 2028-07-31
- Phone
- (619) 633-2546
- Verified
- August 17, 2026
- Licensed since
- 2015
- Expires
- 2027-02-28
- Phone
- (619) 380-0921
- Verified
- August 17, 2026
- Licensed since
- 2016
- Expires
- 2026-11-30
- Phone
- (619) 274-6909
- Verified
- August 17, 2026
- Licensed since
- 2019
- Expires
- 2027-07-31
- Phone
- (619) 704-6698
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Oasis Plumbing & Heating | #796018 | Exempt or none on file | 2001 |
| Sloan Brothers Inc. DBA South Bay Mechanical Services | #901161 | On file | 2007 |
| All Star A / C | #943414 | On file | 2010 |
| Efficient Air Systems Inc. | #960009 | On file | 2011 |
| West Point Mechanical Inc. | #971490 | On file | 2012 |
| Blu Heating And Air | #1000747 | Exempt or none on file | 2015 |
San Diego County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 850 active C-20 heating and air conditioning licenses in San Diego County, 14 of them registered in National City. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median National City license has been held 7 years, and the longest-standing one dates to 2001. 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: 12 of National City's 14 licenses (85.7%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 850 of the county's 850 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 National City: common questions
How many licensed HVAC contractors are there in National City?
14 active C-20 heating and air conditioning licenses are registered in National City, out of 850 across San Diego County. 14 National 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. 14 active C-20 heating and air conditioning licenses are registered in National City and 850 across San Diego County, the longest-standing issued in 2001. 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 12 of National City's 14 currently carry. 69 San Diego County licenses expire within 90 days.