Hvac contractors in Antioch by the numbers
Antioch is home to 38 licensed HVAC contractors (C-20, CSLB September 2026), about 6% of the 594 contractor licenses based here.
Nearby in Contra Costa County: Concord (74), Brentwood (31), Oakley (19), Pittsburg (17).
16% of Antioch's C-20 licensees hold more than one classification — most often C-38 Refrigeration Contractor (8%), C-10 Electrical Contractor (5%). Extra classifications can change how carriers rate your general liability and workers' comp, so list every license class when you quote.
Business structure: 53% sole owners, 42% corporations, 5% LLCs; median time licensed 9.7 years.
What carriers look at
For HVAC contractors, underwriters focus first on: heat illness and falls working in attics and on rooftops; and water damage from condensate lines and drain pans after an install. See the full coverage guide for HVAC contractors for limits, endorsements and workers' comp rules.
Get a quote
Asena Capital Insurance Services compares multiple markets for Antioch contractors and requests additional insured endorsements for you when a contract calls for them. Call (858) 925-9555 or request a quote — only your name, phone and email are required. CA License #6008596.
Frequently asked questions
How many licensed HVAC contractors are in Antioch?
38 active C-20 licenses have a business address in Antioch (CSLB, September 2026); 92% carry workers' comp and 0% are filed exempt.
Can a C-20 HVAC contractor stay exempt from workers' comp?
No. Since January 1, 2023, every active C-20 license must have a current workers' comp policy on file with CSLB, with or without employees.