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HVAC Licensing Guide -- 2025

Washington HVAC License Requirements

Complete guide to Washington State HVAC specialty contractor licensing via the Department of Labor and Industries (L&I).

State License Required
Yes
Regulating Body
Washington L&I
EPA 608 Required
Yes
License Type(s)
Specialty Contractor (HVAC)
Renewal Period
1 Year
CE Hours
8 hours

Overview

Complete guide to Washington State HVAC specialty contractor licensing via the Department of Labor and Industries (L&I). The state requires licensing to ensure consumer protection and professional standards in HVAC installation and service.

EPA 608 Required

Federal law requires EPA 608 certification for anyone purchasing or handling refrigerants. This applies regardless of state licensing status. Use our free EPA 608 course to prepare.

License Requirements

Requirement Details
Regulating Body Washington L&I
License Type(s) Specialty Contractor (HVAC)
Renewal Period 1 Year
Continuing Education 8 hours
EPA 608 Certification Required for refrigerant handling
Surety Bond $6,000
General Liability Insurance $200,000

Exam Details

Detail Information
Exam Provider State exam
Exam Fee $55
Format Multiple choice, computer-based
Passing Score 70% (varies by state)
Application Fee $117

Application Process

  1. Verify and document your HVAC experience
  2. Obtain EPA 608 certification
  3. Apply through Washington L&I and pay application fee
  4. Pass required exam(s)
  5. Submit proof of insurance and bond
  6. Receive license and begin working

FAQ

Is EPA 608 required in Washington?
Yes. EPA 608 is a federal requirement for all refrigerant handling regardless of state licensing. It is typically a prerequisite for the state contractor license as well. Our free EPA 608 course can help you prepare.
Does Washington have reciprocity with other states?
Reciprocity agreements change frequently. Contact Washington L&I directly to confirm current reciprocity agreements with your home state. Out-of-state experience typically counts toward experience requirements.
Can I work in Washington while my license application is pending?
Generally no. You must have a valid license before performing HVAC work for compensation in Washington. Working without a license is a violation that can result in fines and affect your ability to obtain a license. Contact Washington L&I for specific guidance.
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