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Washington HVAC & Appliance Repair Insurance Requirements (2026)

HVAC Contractors

HVAC/Refrigeration Specialty Contractor Registration

Washington State Department of Labor & Industries (L&I)
General LiabilityRequired

Minimums: $50,000 property damage / $100,000 injury or death to any one person / $200,000 injury or death to more than one person (or L&I's own registration page states an accepted alternative of $250,000 combined single limit, though this CSL alternative is not stated in the RCW text itself)

Contractors must furnish proof of general liability insurance (or an assigned-account alternative) meeting these statutory minimums at registration and every reregistration, with L&I listed as certificate holder.[1][2]

Surety BondRequired

Minimums: $15,000 (specialty contractor bond; $30,000 for general contractors)

Specialty contractors, including HVAC/refrigeration registrants, must file a $15,000 surety bond with L&I naming the state as obligee.[1]

Workers' CompensationRequired

Condition: any employee

Washington's industrial insurance is a state-monopoly system; employers with any employees must obtain coverage from L&I (or become certified self-insured) — private workers' comp insurance is not permitted.[1]

Appliance Repair

Washington does not require L&I contractor registration for standalone appliance repair that does not alter a structure's plumbing, electrical, or gas systems, and general liability insurance is not mandated by statute for this work. Businesses that also perform installation work affecting a building's systems may trigger contractor registration under RCW 18.27. Manufacturers' warranty networks, home warranty companies, and commercial landlords typically require proof of general liability insurance (COI) regardless.

Workers' Compensation Threshold

Washington is a monopolistic workers' compensation state — industrial insurance coverage may only be purchased through the state fund (L&I) or via certified self-insurance (employers with at least $25 million in assets), and it is required starting with an employer's very first employee. RCW 51.12.020 exempts only specific narrow categories (sole proprietors and partners with no employees, certain corporate officers/LLC members who opt out, small-scale domestic help, and a handful of other listed occupations) — there is no general numeric employee-count threshold for ordinary trade or construction businesses.

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Frequently Asked Questions

Does Washington require insurance for HVAC contractors?▾
Yes. HVAC/Refrigeration Specialty Contractor Registration (Washington State Department of Labor & Industries (L&I)) requires general liability insurance, a surety bond, workers' compensation insurance.
How much liability insurance does an HVAC contractor need in Washington?▾
For the HVAC/Refrigeration Specialty Contractor Registration, the required minimum is $50,000 property damage / $100,000 injury or death to any one person / $200,000 injury or death to more than one person (or L&I's own registration page states an accepted alternative of $250,000 combined single limit, though this CSL alternative is not stated in the RCW text itself).
Do appliance repair businesses need a license or insurance in Washington?▾
Washington does not require L&I contractor registration for standalone appliance repair that does not alter a structure's plumbing, electrical, or gas systems, and general liability insurance is not mandated by statute for this work. Businesses that also perform installation work affecting a building's systems may trigger contractor registration under RCW 18.27. Manufacturers' warranty networks, home warranty companies, and commercial landlords typically require proof of general liability insurance (COI) regardless.
When is workers' compensation insurance required in Washington?▾
Washington is a monopolistic workers' compensation state — industrial insurance coverage may only be purchased through the state fund (L&I) or via certified self-insurance (employers with at least $25 million in assets), and it is required starting with an employer's very first employee. RCW 51.12.020 exempts only specific narrow categories (sole proprietors and partners with no employees, certain corporate officers/LLC members who opt out, small-scale domestic help, and a handful of other listed occupations) — there is no general numeric employee-count threshold for ordinary trade or construction businesses.

Sources

  1. Washington State Legislature — RCW 51.12.020 — Employments excepted, accessed 2026-07-15
  2. Washington State Legislature — RCW 18.27.050 — Insurance — Amount — Alternative, accessed 2026-07-15
  3. Washington State Department of Labor & Industries — Register as a Contractor, accessed 2026-07-15
  4. Washington State Legislature — RCW 18.27.040 — Bond or other security required, accessed 2026-07-15

Last verified 2026-07-15. Spot something inaccurate? Report an inaccuracy.