Exam fact · with its source
Which EPA 608 certification type do you need?
EPA 608 has four certification types: Type I for small appliances, Type II for medium-, high- and very-high-pressure equipment, Type III for low-pressure equipment, and Universal for all three.
4certification types
The types
Type I covers small appliances; Type II covers medium-, high- and very-high-pressure appliances except small appliances and motor-vehicle AC; Type III covers low-pressure appliances; Universal covers all of them. Every type also requires the Core section.
Source: 40 CFR 82.161(a)(1) (eCFR) · as of October 5, 2026
What each type covers
EPA 608 certification types and the equipment they cover
| Type | Equipment covered | Examples | Study guide |
|---|---|---|---|
| Type I | Small appliances: factory-made, charged and hermetically sealed with 5 lb of refrigerant or less | Household refrigerators and freezers, window and room AC, dehumidifiers, vending machines, water coolers | Type I section guide |
| Type II | Medium-, high- and very-high-pressure appliances, except small appliances and MVACs | Residential split AC and heat pumps, commercial refrigeration on R-22, R-410A or R-134a | Type II section guide |
| Type III | Low-pressure appliances | Chillers on R-123, R-11 or R-245fa | Type III section guide |
| Universal | Everything in Types I, II and III | Work that crosses equipment classes | All four sections |
Definitions: 40 CFR 82.152 and 82.161(a)(1), eCFR as of October 5, 2026.
Where the pressure lines fall
Cases the definitions settle
- Residential split AC
- Charged in the field, so it isn't a small appliance even with a modest charge: Type II. The full test is on what counts as a small appliance.
- MVAC-like appliances
- Open-drive AC on off-road vehicles with 20 lb or less, not on R-22: Type II or Section 609 covers them. Car AC serviced for pay is a Section 609 job, compared in EPA 608 vs 609.
- Apprentices
- Exempt only while closely and continually supervised by a certified technician (40 CFR 82.161(a)(2), eCFR as of October 5, 2026).
- Universal
- Taken in one sitting or assembled from separate Type I, II and III passes; a mail-in Type I pass can't be one of the pieces (40 CFR 82, Appendix D (a)).
Choosing a type
Match the type to the equipment you'll open. Appliance repair on sealed units points to Type I, residential and commercial AC or refrigeration to Type II, low-pressure chillers to Type III. If your work crosses classes, or you don't know yet, Universal removes the question: the Core section is the same either way. The full sequence from choosing a type to the card is on how to get EPA 608 certification.
Mixing and matching types
Can I hold Type I and Type II without Universal?
Yes. Each type is its own certification. Adding Type III later completes Universal, since Appendix D lets separate passes combine (40 CFR 82, Appendix D (a), eCFR as of October 5, 2026).
Does Type I cover a window AC unit?
Yes, when it's factory-charged and hermetically sealed with 5 lb or less; window and room AC units are listed among small appliances (40 CFR 82.152, eCFR as of October 5, 2026).