HVAC contractor (C-20) in South San Francisco, CA

3 licenses · checked Oct 27, 2026

There are 3 HVAC contractor (C-20) licenses with an address of record in South San Francisco, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.2% of the 1,847 such licenses statewide; South San Francisco ranks #200 of 425 CA cities for this license type. Most list San Mateo County. By business type: Corporation 2, Sole Owner 1. The median first-issue year is 2019; the oldest license dates from 2018. 1 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 South San Francisco

Showing 3 of 3, A to Z. Listing order is alphabetical, not a recommendation.

Frequently asked questions

How many HVAC contractor (C-20) licenses are in South San Francisco?

3 active licenses in the CSLB License Master data checked Oct 27, 2026 (0.2% 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 South 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 South San Francisco HVAC contractor (C-20) licenses expire soon?

1 of 3 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 South San Francisco

General building contractor (27) · Electrical contractor (C-10) (6) · Plumbing contractor (C-36) (4) · Low-voltage contractor (C-7) (4) · Painting contractor (C-33) (3)

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.