Buyer Education | Updated June 2026
California needs a C-20 license for HVAC work over $500. You can verify any contractor in seconds at cslb.ca.gov. Here are 7 questions every Sacramento homeowner should ask before signing.
Not all HVAC contractors are equal. California has strict license rules. Sacramento's Title 24 rules add more. A contractor who skips permits or load sizing may leave you with a unit that fails inspection. It can void the maker's warranty. It may break in year two. Fresh Air has been licensed in California since 2010. CSLB #945361 is public record. This guide gives you the seven questions to ask before you sign.
Ask for the CSLB license number and check it at cslb.ca.gov before you sign. A valid C-20 license is needed by California law for any HVAC job over $500. A contractor with no license cannot legally pull your permit.
Permit-skipping crews are common in Sacramento. A permit creates a record of the install. It needs a city inspection. It protects you when you sell. If a contractor says no permit is needed for a full swap, that is wrong.
Manual J is the ANSI-standard way to size HVAC gear. It is also needed for Title 24 permit docs. Ask how the contractor picks a unit size. If the answer is square footage alone, that is a red flag.
California needs a C-20 license for HVAC work over $500. The license needs four years of experience, a two-part CSLB exam, a $25,000 bond, and workers comp. Any contractor who cannot show a CSLB number should not be on your list.
Title 24 rules matter more in Sacramento than in many other cities. Duct leakage testing and HERS rater checks are needed for qualifying swaps. A contractor who does not know what HERS stands for cannot handle your permit docs.
Go to cslb.ca.gov and type in the contractor's name or license number. The site shows if the license is active, what class it holds, and any discipline history. It takes under a minute.
A C-20 is an HVAC contractor license from the California Contractors State License Board. It lets the holder install, maintain, and repair HVAC gear. It is needed for any HVAC job over $500 in California.
A HERS rater is a Home Energy Rating System inspector. Some HVAC swaps under Title 24 need one to verify duct leakage and unit output after install. Your contractor should set this up, not leave it to you.
Yes. Fresh Air holds CSLB license #945361, is fully insured, and has been in Sacramento since 2010. You can verify the license at cslb.ca.gov.
Do not sign under pressure. Good HVAC contractors give you time to review the quote and ask questions. A contractor who says an offer expires today is using a sales tactic. Call a second company for a compare estimate.
Fresh Air holds CSLB #945361, is insured, and has pulled permits on every install since 2010. We serve Sacramento, Folsom, Elk Grove, Roseville, Rocklin, and nearby areas. Call (916) 416-8181 or visit /contact/ for a free estimate.