EPA 608 Practice Test

EPA 608 practice questions

Core, Type I, Type II and Type III concepts with a written explanation on every answer. Study material only — the certification exam itself is administered by an EPA-approved certifying organization.

What each EPA 608 type covers

Core

Ozone and climate science basics, the venting prohibition, recovery and recycling rules, cylinder handling, dehydration and evacuation, safety and shipping.

Type I — small appliances

Factory-sealed appliances with 5 lb of charge or less: recovery percentages, access methods, and the practical realities of sealed-system work.

Type II — high pressure

Split systems, packaged rooftops and supermarket racks: leak repair requirements, evacuation levels by charge size, non-condensables and recovery techniques.

Type III — low pressure

Centrifugal chillers: purge units, rupture discs, leak testing below the disc rating and safe recovery without freezing tubes.

Refrigerant-handling labs to work next

Questions test recall. These graded decision labs test whether you can work the call: one decision at a time, readings that fill in as you check, coaching when you take a wrong turn. Free, no login.

• Superheat and subcooling decision

  Read both numbers together and decide what the system is really doing before you touch a charge.

• Frozen coil — airflow or charge?

  Separate an airflow restriction from a charge or TXV problem instead of adding refrigerant to ice.

• Walk-in cooler not holding temperature

  Commercial refrigeration diagnosis with real readings and a confirmed root cause.

• Natural refrigerant safe handling

  Flammable and high-pressure natural refrigerant practice — directly relevant to A2L awareness.

Questions technicians ask

Is this the official EPA 608 exam?

No. This is free practice material written by working technicians. The EPA Section 608 exam is administered by EPA-approved certifying organizations, and only they can issue the certification.

What sections does EPA 608 have?

Core, plus Type I (small appliances), Type II (high-pressure equipment), Type III (low-pressure equipment). Passing Core and all three types gives Universal certification.

Do the questions cover A2L refrigerants?

Yes. The bank includes A2L awareness items covering the A2L safety classification and safe practice when servicing mildly flammable refrigerants such as R-32 and R-454B.

Is the practice test free?

Yes, and there is no login. Every answer comes with a written explanation so you learn the reasoning, not just the letter.

What comes after the practice questions?

The graded diagnostic labs. They put the same refrigerant-handling and system knowledge into a real service call where you have to choose the next check and defend it.