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Washington HVAC License Requirements
Everything you need to legally start and operate an HVAC business in Washington — licensing, insurance minimums, bonding, and official application links.
Licensing Requirements Checklist
License Type
Specialty Contractor Registration
Issuing Authority
Department of Labor & Industries
Experience Required
Primarily registration/insurance focused, no heavy trade hour prerequisites.
Exam Required
No statewide HVAC trade exam
EPA Section 608 Certification
Required federally for handling refrigerants (all states).
Insurance & Bonding
Minimum Insurance
$200,000 general liability, $50,000 property damage
Surety Bond
$6,000 Specialty Contractor Bond
Fees & Timeline
Application Fee
$124
Estimated Processing
4 – 12 weeks
Varies by state board workload
Ready to Apply?
Visit the official Department of Labor & Industries website to start your HVAC contractor license application for Washington.
Disclaimer: Information on this page is compiled from publicly available state resources for educational purposes. Requirements change frequently — always verify directly with the Department of Labor & Industries before making business decisions.