A technician will open the sealed system of a window air conditioner to replace its compressor. Which certification does this work require?
Anyone who maintains, services or repairs small appliances, such as opening a window air conditioner to replace its compressor. Type I certification covers it, and so does Universal.
- Type II, because window units use high-pressure refrigerant
- None, because the charge is under 5 pounds
- Type I, or UniversalCorrect answer
- Section 609 certification
Why “Type I, or Universal” is correct
Section 82.161(a)(1)(i) states that persons who maintain, service or repair small appliances must be certified as Type I technicians. A Universal technician holds Type I as part of that certification.
Source: 40 CFR 82.161(a); EPA: Certification Requirements
Why the other answers are wrong
- Type II, because window units use high-pressure refrigerant — Type II covers appliances other than small appliances; a window unit is a small appliance.
- None, because the charge is under 5 pounds — The 5-pound charge is what makes it a small appliance, and servicing a small appliance requires Type I; only disposal is exempt from certification.
- Section 609 certification — Section 609 covers motor vehicle air conditioning, not room air conditioners.
The source, word for word
Persons who maintain, service, or repair small appliances must be certified as Type I technicians.
How the certifications divide the work
The type follows the appliance, not the refrigerant name on its own.
| Certification | Covers |
|---|---|
| Type I | Small appliances |
| Type II | Medium-, high- and very high-pressure appliances, except small appliances, MVACs and MVAC-like appliances |
| Type III | Low-pressure appliances |
| Universal | All of the above |
What does not need Type I
Recovering refrigerant from a small appliance to prepare it for disposal does not require certification, though the equipment must still meet EPA's standards (EPA: Safe Disposal Requirements). Motor vehicle air conditioning falls under Section 609, not Section 608. How to get certified covers the test itself.
Keep practicing
- How to get EPA 608 certified
- What counts as a small appliance
- The standard for small-appliance recovery equipment
- EPA 608 Type 1 practice test
- EPA 608 Type 1 mock exam
Unofficial, not affiliated with the EPA or any EPA-approved certifying organization. Questions are original practice written from public EPA material, not real exam questions.