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Workers' Comp Insurance for HVAC Businesses in Washington

HVAC install and service (NCCI class code 5538) covers heating, ventilation, and air conditioning installation including ductwork. Service-only operations may qualify for a different class code with lower rates in Washington. The Washington workers' compensation market is governed by L&I (state fund) — a monopolistic state fund (no private market), and the average rate statewide is approximately $1.16 per $100 of payroll.

Avg HVAC rate in WA
$7.91
per $100 payroll
$100K payroll → annual
$7,909
estimated annual premium
Washington bureau
L&I
Monopolistic

Washington requirements for hvac businesses

When required: All employers must obtain coverage through Washington Department of Labor & Industries (L&I) — monopolistic state.

Sole proprietors: Sole proprietors are exempt unless they elect to enroll with L&I.

Owner / officer exclusion: Officers and LLC members may be excluded.

⚠️ Washington is a monopolistic state

All Washington workers' comp coverage must be purchased through the state fund (L&I (state fund)). Private workers' comp insurance is not available in Washington, but we can help with employer's liability ("stop-gap") coverage that complements the state fund.

HVAC class codes used in Washington

5538 Sheet Metal Work — Shop and Outside, NOC
$4.75-$12.13
WA typical rate
5183 Plumbing NOC & Drivers
$4.22-$10.55
WA typical rate

Why hvac workers' comp is tricky in Washington

HVAC contractors who also do plumbing or electrical work need separate class allocation. Many carriers prefer service-only HVAC accounts over install-heavy operations.

Tips for Washington HVAC contractors

  • ✓ Service vs install split matters for rating
  • ✓ Refrigerant-handling certifications can earn schedule credits
  • ✓ Pay-as-you-go is widely available

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HVAC workers' comp in other states

Rates and requirements for HVAC contractors vary widely by state. Compare Washington to other major markets:

HVAC in California $1.45 HVAC in Texas $1.04 HVAC in Florida $1.42 HVAC in New York $1.41 HVAC in Pennsylvania $1.27 HVAC in Illinois $1.66 HVAC in Ohio $0.74 HVAC in Georgia $1.06

Other industries in Washington

Washington workers' comp rates and requirements for other common industries:

Construction in WA 9 class codes Roofing in WA 1 class code Plumbing in WA 3 class codes Electrical in WA 3 class codes Painting in WA 3 class codes Landscaping in WA 3 class codes Restaurants in WA 4 class codes Retail in WA 5 class codes

More Washington workers' comp resources