HVAC contractor (C-20) in San Francisco, CA
9 licenses · checked Oct 27, 2026
There are 9 HVAC contractor (C-20) licenses with an address of record in San Francisco, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.5% of the 1,847 such licenses statewide; San Francisco ranks #51 of 425 CA cities for this license type. They are spread across 7 ZIP codes; the most common are 94112 (3), 94134 (1), 94080 (1). Most list San Francisco County. By business type: Corporation 5, Sole Owner 3, Partnership 1. The median first-issue year is 2017; the oldest license dates from 2015. 7 of them come up for renewal or expiration in the next 12 months, so re-check status before you sign a contract.
What a HVAC contractor (C-20) license covers
Warm-Air Heating, Ventilating and Air-Conditioning (C-20) covers furnaces, heat pumps, air-conditioning units, ducts and ventilation systems.
How to verify a license
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Official lookup: CSLB Instant License Check.
HVAC contractor (C-20) licenses in San Francisco
Showing 9 of 9, A to Z. Listing order is alphabetical, not a recommendation.
- Associated Heating OF SAN Francisco INC#1001526 · 94112
- Astorga Construction INC#1008360 · 94112
- Green AIR Mechanical INC#1047690 · 94134
- High Zone Building Services#1044260 · 94080
- Kevel Home Performance#1021221 · 94122
- Lopez Heating#1025103 · 94112
- Mech 23 INC#1054859 · 94130
- Nani Heating & AIR Conditioning#1063316 · 94124
- Q4 Mechanical Corporation#1006003 · 94110
Frequently asked questions
How many HVAC contractor (C-20) licenses are in San Francisco?
9 active licenses in the CSLB License Master data checked Oct 27, 2026 (0.5% of CA).
What does a HVAC contractor (C-20) license cover?
Warm-Air Heating, Ventilating and Air-Conditioning (C-20) covers furnaces, heat pumps, air-conditioning units, ducts and ventilation systems.
How do I verify a HVAC contractor (C-20) license in San Francisco?
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Use the license number shown here with the CSLB Instant License Check.
How many San Francisco HVAC contractor (C-20) licenses expire soon?
7 of 9 have an expiration date in the next 12 months. A license that lapses must be renewed before the holder can work under it again.
Other license types in San Francisco
General building contractor (324) · Plumbing contractor (C-36) (63) · Electrical contractor (C-10) (57) · Painting contractor (C-33) (49) · General engineering contractor (41) · Landscaping contractor (C-27) (18) · Roofing contractor (C-39) (17) · Flooring contractor (C-15) (12) · Tile contractor (C-54) (12) · Glazing contractor (C-17) (10) · Low-voltage contractor (C-7) (8) · Fire protection contractor (C-16) (7)
All HVAC contractor (C-20) licenses in CA →
Source: CSLB License Master. Licensed California is independent and not affiliated with the licensing agency. Data checked Oct 27, 2026.