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HVAC Licensing Guide -- 2025

Montana HVAC License Requirements

Montana HVAC work is primarily regulated through the plumbing licensing system via the Department of Labor and Industry.

State License Required
Yes
Regulating Body
Montana DLI
EPA 608 Required
Yes
License Type(s)
Plumbing/Mechanical Contractor
Renewal Period
2 Years
CE Hours
Varies

Overview

Montana HVAC work is primarily regulated through the plumbing licensing system via the Department of Labor and Industry. 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 Montana DLI
License Type(s) Plumbing/Mechanical Contractor
Renewal Period 2 Years
Continuing Education Varies
EPA 608 Certification Required for refrigerant handling
Surety Bond $25,000
General Liability Insurance $300,000

Exam Details

Detail Information
Exam Provider State exam
Exam Fee $75
Format Multiple choice, computer-based
Passing Score 70% (varies by state)
Application Fee $150

Application Process

  1. Verify and document your HVAC experience
  2. Obtain EPA 608 certification
  3. Apply through Montana DLI 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 Montana?
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 Montana have reciprocity with other states?
Reciprocity agreements change frequently. Contact Montana DLI directly to confirm current reciprocity agreements with your home state. Out-of-state experience typically counts toward experience requirements.
Can I work in Montana while my license application is pending?
Generally no. You must have a valid license before performing HVAC work for compensation in Montana. Working without a license is a violation that can result in fines and affect your ability to obtain a license. Contact Montana DLI for specific guidance.
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