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CSLB classification · HVAC

D-62 Air and Water Balancing

Tests and balances HVAC systems.

115
Active licences
84
With workers' comp
73%
27
Renewing in 90 days
2
Lapsed or suspended
30
Exempt
3
New in 90 days

Coverages a producer should expect

  • ›Workers' comp
  • ›General liability
  • ›Professional liability

WCIRB classes usually assigned

Assigned from the specific operations; no single governing class.

Governing class depends on actual operations and payroll. Verify with the WCIRB classification search before quoting.

Carriers writing this class

Policies on file, statewide

  1. State Compensation Insurance Fund15
  2. Hartford Casualty Insurance Co.9
  3. American Casualty Co. Of Reading Pa4
  4. Hartford Underwriters Insurance Co.4
  5. Federal Insurance Co.3
  6. Amtrust Insurance Co.3
  7. Omaha National Casualty Co.3
  8. Insurance Co. Of The West3
  9. Technology Insurance Co. Inc3
  10. Continental Insurance Co.3

D-62 workers' comp renewals by month, California

1
Sep
14
Oct
6
Nov
10
Dec
8
Jan
5
Feb
5
Mar
7
Apr
6
May
6
Jun
7
Jul
5
Aug
1
Sep

Counties with the most

  1. Los Angeles County24
  2. Orange County14
  3. San Diego County10
  4. Sacramento County9
  5. Riverside County9
  6. Santa Clara County8
  7. County6
  8. Fresno County4
  9. San Luis Obispo County4
  10. San Bernardino County3
  11. Monterey County3
  12. Stanislaus County3

Related classes in HVAC

C-4 Boiler, Hot Water Heating and Steam Fitting ContractorC-20 Warm-Air Heating, Ventilating and Air-Conditioning ContractorC-38 Refrigeration Contractor

Frequently asked

What does a D-62 licence allow a contractor to do?
Tests and balances HVAC systems.
What insurance does a D-62 contractor need?
Workers' compensation is required by law once they have employees; the CSLB suspends a licence without it. Beyond that, producers usually place: Workers' comp; General liability; Professional liability.
How many D-62 contractors are there in California?
115 active licences hold the D-62 classification as of 2026-09-06; 84 (73%) have workers' comp on file and 30 are exempt.
When do D-62 workers' comp policies renew?
27 renew within 90 days. October is the peak month.
Selling to D-62 contractors in California?
Birdray runs signal-timed outbound for one agency per territory: the companies behind these numbers, the person to email, and the renewal date, sent from your inbox. The database is free to search.
How the outbound worksSearch free

Sources: CSLB licence and workers' compensation records, California Secretary of State, OSHA, FMCSA, county permits. Aggregates only; no individual contractor appears on this page. "Active" means a CLEAR licence status. Renewal counts include policies on file with the CSLB expiring in the window. Refreshed weekly; this page as of 2026-09-06. Every field and its source →

D-62 Air and Water Balancing: Insurance and WCIRB Classes | Birdray