HVAC contractor (C-20) in Brentwood, CA
11 licenses · checked Oct 27, 2026
There are 11 HVAC contractor (C-20) licenses with an address of record in Brentwood, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.6% of the 1,847 such licenses statewide; Brentwood ranks #32 of 425 CA cities for this license type. Most list Contra Costa County. By business type: Corporation 6, Sole Owner 4, Limited Liability 1. The median first-issue year is 2017; the oldest license dates from 2015. 6 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 Brentwood
Showing 11 of 11, A to Z. Listing order is alphabetical, not a recommendation.
- BAY Area Comfort Solutions Hvac INC#1012679 · 94513
- BIG Pipe Mechanical#1055935 · 94513
- Cali Climate Mechanical#1028723 · 94513
- California Mechanical#1008598 · 94513
- Carlos Insulation INC#1013211 · 94513
- Duct Care Services#1028890 · 94513
- Extensive AIR Conditioning INC#1046825 · 94513
- Mercury Heating AND AIR Conditioning INC#1040640 · 94513
- NEO AIR & Construction LLC#1027164 · 94513
- Royale AIR Heating AND AIR Conditioning#1025922 · 94513
- Stellar Construction#1057503 · 94513
Frequently asked questions
How many HVAC contractor (C-20) licenses are in Brentwood?
11 active licenses in the CSLB License Master data checked Oct 27, 2026 (0.6% 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 Brentwood?
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 Brentwood HVAC contractor (C-20) licenses expire soon?
6 of 11 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 Brentwood
General building contractor (36) · Electrical contractor (C-10) (6) · Plumbing contractor (C-36) (6) · Painting contractor (C-33) (6) · Roofing contractor (C-39) (6) · Landscaping contractor (C-27) (6) · General engineering contractor (5) · Swimming pool contractor (C-53) (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.