Limited state licensing

Oregon HVAC Licensing and Local Requirements Guide

Limited state licensing

Check the rules for this work

Oregon’s Building Codes Division offers a Limited Maintenance Specialty Contractor HVAC/R credential, identified as LHR.

LHR is a limited contractor credential. Check the application’s scope, signing-supervisor requirements and other applicable licenses before using it for HVAC or refrigeration work.

Check which state license applies ↗

Official source: www.oregon.gov. Retrieved 2026-09-05.

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Latest source retrieval: 2026-09-05.