Oklahoma licenses both individual journeymen and contractors through its Construction Industries Board, with an above-average 75% passing score requirement. The contractor license requires a qualifying journeyman and a $5,000 surety bond.
Journeyman: 3 years of qualifying mechanical experience under a licensed journeyman or contractor. Contractor: same 3 years plus 1 additional year = 4 years total.
Yes — Journeyman: PSI exam, 75% passing score. Contractor: PSI trade exam plus business and law exam, both at 75%. Exam fee: $92 each.
6 hours within the preceding 36 months before license expiration
Limited — Oklahoma permits reciprocity for some license types but mechanical licenses do not have active reciprocal agreements with other states
Reciprocity agreements can change. Always verify current status directly with Oklahoma Construction Industries Board before relying on reciprocity for licensure.
Oklahoma's 75% passing score is among the higher standards nationally. The contractor license requires an active journeyman as the qualifying party plus a $5,000 surety bond.
EPA 608 Certification — Required in All 50 States
Regardless of Oklahoma's state licensing rules, any technician who purchases, handles, or works with regulated refrigerants must hold EPA Section 608 certification. This is a federal requirement under the Clean Air Act that no state law can waive. EPA 608 Universal (covering Type I, II, and III) is the most versatile credential for most HVAC roles.
Browse EPA 608 Universal jobs in OklahomaOklahoma's Construction Industries Board contracts with PSI to administer both the Journeyman and Contractor HVAC exams, each requiring a 75% passing score — one of the higher thresholds nationally. The Journeyman exam tests trade competency while the Contractor track adds a separate Business and Law component. Both exams carry a $92 fee. Oklahoma's extremes, scorching summers that push residential equipment hard and sudden ice storms that can load heating systems beyond design conditions, make load calculations and equipment selection recurring exam themes.
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Last verified: 2026 · Always confirm current requirements with your state licensing board before starting work or submitting an application.
Oklahoma Construction Industries Board (CIB)
Visit official board websiteApproximate first-attempt pass rate: Approximately 58–62% first-attempt pass rate; the 75% threshold places Oklahoma among the more difficult state exams nationally
