HVAC contractor (C-20) in Hayward, CA
9 licenses · checked Oct 27, 2026
There are 9 HVAC contractor (C-20) licenses with an address of record in Hayward, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.5% of the 1,847 such licenses statewide; Hayward ranks #47 of 425 CA cities for this license type. They are spread across 4 ZIP codes; the most common are 94545 (4), 94544 (2), 94541 (2). Most list Alameda County. By business type: Corporation 5, Limited Liability 2, Sole Owner 2. The median first-issue year is 2018; the oldest license dates from 2015. 5 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 Hayward
Showing 9 of 9, A to Z. Listing order is alphabetical, not a recommendation.
- Absolute AIR Solutions#1059577 · 94544
- Artisan AIR Heating Cooling INC#1018534 · 94545
- Attic Star INC#1039731 · 94549
- Cedar Builders INC#1059163 · 94541
- Climate Pros LLC#1056931 · 94545
- Freese Heating AND AIR#1000627 · 94544
- Precision Hvac Heating & AIR Conditioning#1047076 · 94541
- Same DAY AIR Conditioning & Heating#1009199 · 94545
- Villquin AIR Services LLC#1062552 · 94545
Frequently asked questions
How many HVAC contractor (C-20) licenses are in Hayward?
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 Hayward?
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 Hayward HVAC contractor (C-20) licenses expire soon?
5 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 Hayward
General building contractor (88) · Electrical contractor (C-10) (21) · Painting contractor (C-33) (18) · Landscaping contractor (C-27) (16) · Tile contractor (C-54) (15) · Plumbing contractor (C-36) (13) · General engineering contractor (9) · Flooring contractor (C-15) (7) · Concrete contractor (C-8) (5) · Low-voltage contractor (C-7) (5) · Cabinet and finish carpentry contractor (C-6) (5) · Glazing contractor (C-17) (5)
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.