EPA Section 608 Refrigerant Certification

Free practice tests, topic drills and exam strategy for the EPA Section 608 Refrigerant Certification credential, administered by EPA. Each topic below has dedicated practice variants with answer explanations.

25 core + 25 per typeExam length

70% per typePassing standard

$24-$150 USDExam fee

5Topic domains

Practice by topic domain

Click any topic to start a drill. Each topic has two practice variants — do them on different days for spaced repetition.

1

Core (Required for All Types)

2 practice variants · 12 questions each · instant scoring

Variant 1 · Variant 2

2

Type I — Small Appliances

2 practice variants · 12 questions each · instant scoring

Variant 1 · Variant 2

3

Type II — High-Pressure Appliances

2 practice variants · 12 questions each · instant scoring

Variant 1 · Variant 2

4

Type III — Low-Pressure Appliances

2 practice variants · 12 questions each · instant scoring

Variant 1 · Variant 2

5

Universal Certification

2 practice variants · 12 questions each · instant scoring

Variant 1 · Variant 2

About the EPA 608

The EPA Section 608 Refrigerant Certification is administered by EPA and runs 25 core + 25 per type, with a passing score of 70% per type. The current exam fee is $24-$150 USD. The official candidate handbook and registration is available from the EPA directly: view the official exam page →

This credential is part of the Skilled Trades & Transportation career field. Skilled-trade and transportation licensing exams cover commercial driving (CDL by the FMCSA and state DMVs), HVAC refrigerant handling (EPA Section 608, NATE), electrical journeyman/master licensure, plumbing, welding (AWS) and OSHA construction-safety credentialing. Each is administered by a federal agency or trade body with a state-issued license layered on top.