How many air & water balancing contractors are licensed in California?

California has 119 contractors with a D62 (Air & Water Balancing) license from the Contractors State License Board. 113 (95%) hold active licenses. SiteVetter checks each against SAM.gov, OSHA, DOL, and EPA databases.

What does a D62 license cover in California?

A California D62 license covers air and water balancing contractors for hvac systems. Any contractor performing air & water balancing work valued at $500 or more must hold this license. The CSLB issues and regulates all contractor licenses in the state.

What percentage of air & water balancing contractors have federal violations?

4.2% of California air & water balancing contractors (5 out of 119) have at least one record in federal databases. These include SAM.gov debarments, DOL wage violations, OSHA safety citations, and EPA environmental violations.

Verify Air & Water Balancing Contractors (D62) | CSLB + Federal Check

How to Verify a Air & Water Balancing Contractor (D62) in California

California requires all contractors performing air & water balancing work valued at $500+ to hold a valid CSLB D62 license. Of the 119 licensed air & water balancing contractors in the state, 95% currently hold active licenses and 4.2% have at least one federal compliance record.

Manual vetting takes 45+ minutes per contractor and routinely misses violations in databases most people don't know to check. SiteVetter runs CSLB status, SAM.gov debarment, DOL wage violations, OSHA safety citations, and EPA environmental records in seconds—creating a timestamped compliance artifact.

Verification Checklist for Air & Water Balancing Contractors

Verify the contractor license is active and in good standing
Request proof of insurance and bonding
Get at least 3 written quotes before selecting a contractor
Check federal databases: SAM.gov, OSHA, DOL, and EPA records
Confirm bond: California requires $25,000+ contractor bond (SB 607)

Why Verification Matters for Air & Water Balancing Work

Under California's "Controlling Employer" doctrine, general contractors face liability for subcontractor safety violations. For air & water balancing work specifically, 4.2% of licensed contractors have federal records that a standard CSLB license check wouldn't reveal. SiteVetter's 5-database check catches what a single-source verification misses.

Air & Water Balancing Contractor Verification

About D62 License

Air & Water Balancing Contractors

How to Verify a Air & Water Balancing Contractor (D62) in California

Verification Checklist for Air & Water Balancing Contractors

Why Verification Matters for Air & Water Balancing Work