• Type I - A Type I technician primarily works on small appliances such as domestic refrigerators, window air conditioners,
PTAC's and vending machines.
• Type II – A Type II technician primarily works on equipment using high-pressure refrigerant such as HCFC-22. The equipment
includes residential air conditioners and heat pumps, supermarket refrigeration and process refrigeration.
• Type III - A Type III technician primarily works on equipment using a low-pressure refrigerant such as HCFC-123 or CFC-11.
The units are primarily chillers.
• Universal - Any candidate passing all three of these EPA types Type I, Type II or Type III is certified as UNIVERSAL.
The EPA 608 test is divided into four sections: Core, Type I, Type II and Type III. Each test section has 25 multiple-choice questions drawn from a pool of test questions provided by the EPA. Questions regarding equipment regulations, safety, shipping and identifying refrigerants appear in every test section, so it is important to know these well. Multiple versions of the test are offered at the same time using different questions.
A passing score in a proctored setting is 70%, or 18 out of 25 correct.
A passing score for an online or mail-in Core and/or Type I test is 84%, or 21 out of 25 correct.
Each section is graded independently, so a technician could pass Core, Type I and Type III and fail Type II. In this case the technician would be certified as a Type I & Type III technician. Core must be passed to receive any certification, but it is not a certification on its own. All four sections must be passed in order to be certified as a Universal Technician.
A technician may choose to take Core plus any combination of Type I, Type II or Type III. It is not required to take all four sections on the examination and many only take the sections that cover the equipment they work with on a daily basis. While studying, keep in mind that much of the content from section to section relates back to Core content. If you are studying to pass Type I, you would need to study the Type I section of the study guide and all of the Core material.