Free EPA Section 608 practice for HVAC/R refrigerant certification — Core and Type I, II and III — in the real exam format, with a written explanation on every answer.
EPA Section 608 certification is a federal, nationwide requirement to work with refrigerants in stationary HVAC/R equipment under the Clean Air Act. It has four parts — Core plus Type I, II and III (all four together make Universal). Practice all four below — free, no sign-up, with a written explanation on every question. This whole course is free on LICENA.
No account needed. Pick an answer to see whether it's right and read the explanation — the same explanations you get on every question in the full course.
Every question explains why the answer is correct and defines the refrigerant and recovery terms it uses — so the rule sticks.
Questions are written from scratch against EPA Section 608 rules under the Clean Air Act — never copied from the real exam.
Every question and explanation is fully translated, with the English technical term kept alongside — the real exam is in English.
The whole EPA 608 course is free on LICENA. It's a practice tool, not a certifying body; passing our practice is not the certification itself.
Our practice mirrors the real exam: four sections (Core and Type I, II, III), with an exam mode that draws 25 questions per section. Universal certification means passing all four.
The EPA 608 course is free on LICENA — Core and all three Type sections, no payment. If you're also getting a California contractor license, our CSLB trade banks (like C-10 Electrical) are $20/month per course.
Create free account Creating an account is free — no card needed.LICENA gives you practice questions to study with. We are not an accredited school and we do not guarantee that you will pass any exam.
EPA 608 certification is issued by EPA-approved certifying organizations, not by LICENA. LICENA provides practice only and is not affiliated with the EPA.