Delaware requires a Master HVACR license with either a 6-year combined apprenticeship/supervised experience pathway or a 7-year direct experience pathway. Its extensive reciprocity network covers 15+ states.
Option A: Complete a 4-year apprenticeship (144 classroom hours/year) plus 2 years under a licensed Master HVACR. Option B: 7 years under a licensed Master HVACR plus passing the Apprentice By-Pass Exam.
Yes — open-book exam; 75% passing score. Administered by the state board.
None currently required. Licenses renew biennially (expire December 31 of even years).
Full reciprocity with Connecticut, Iowa, and Maryland. Limited/endorsement reciprocity with Alabama, Arkansas, DC, Florida, Georgia, Michigan, New Hampshire, New Jersey, North Carolina, Ohio, Rhode Island, South Carolina, Virginia, and West Virginia.
Reciprocity agreements can change. Always verify current status directly with Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners — Division of Professional Regulation before relying on reciprocity for licensure.
Delaware has one of the more robust reciprocity networks in the eastern US. The "Master" license structure means all working contractors hold the highest credential — there is no lower individual technician tier at the state level.
EPA 608 Certification — Required in All 50 States
Regardless of Delaware'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 DelawareNew listings matching your preferences, delivered daily — free.
Every listing on HVACJobs.IO shows the actual salary — no "competitive pay" guessing.
Last verified: 2026 · Always confirm current requirements with your state licensing board before starting work or submitting an application.
Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners — Division of Professional Regulation
Visit official board website