EPA 608 practice test 2026

1. Question 1 of 24Core

   At what temperature does 40 CFR 82.152 compare refrigerant saturation pressures to class appliances as low-, medium-, high- or very high-pressure?

   A70 °FB85 °FC104 °FD130 °F
2. Question 2 of 24Type I

   Under 40 CFR 82.152, converting an appliance from R-12 to R-134a is called a:

   AMothballBReclaimCRecycleDRetrofit
3. Question 3 of 24Type II

   A technician evacuates a high-pressure appliance for a major repair. Under §82.156, what must the technician do before opening it?

   ANothing; it may be opened as soon as the recovery machine shuts offBNotify EPA before opening itCHave the owner sign a statement that the refrigerant was recoveredDVerify that the applicable level of evacuation has been reached
4. Question 4 of 24Type III

   For which refrigerant do EPA's Type III topics say ASHRAE Standard 15 requires an equipment room refrigerant sensor?

   AR-22BR-134aCR-123DR-410A
5. Question 5 of 24Core

   What color code does EPA's Core topic list give for reusable (recovery) cylinders?

   ASolid redBBlue and whiteCYellow and grayDGreen and black
6. Question 6 of 24Type I

   What is the most refrigerant a "small appliance" may contain under 40 CFR 82.152?

   A5 poundsB15 poundsC20 poundsD50 pounds
7. Question 7 of 24Type II

   What is a system receiver under §82.152?

   AA recovery cylinder outside the appliance, kept on the service truck for storing recovered refrigerantBThe isolated part of the appliance, or a vessel in it, that holds the charge during serviceCA disposable cylinder used to ship refrigerant to the job siteDThe recovery machine's internal storage tank, which holds recovered refrigerant
8. Question 8 of 24Type III

   For leak testing a low-pressure system, which pressurization method comes first in EPA's order of preference?

   ARefrigerant vapor from a cylinder, fed in until the pressure rises above atmosphericBHot water, or a built-in heating/pressurization device such as PrevacCDry compressed air from a shop compressorDNitrogen from a cylinder with a regulator
9. Question 9 of 24Core

   How does EPA define flammability?

   AThe ability of a substance to burn or ignite, causing fireBA substance's toxicity at 400 ppmCA refrigerant's saturation pressure at 104 °F in the condenserDThe rate at which a refrigerant leaks out of a sealed system over a year
10. Question 10 of 24Type I

    Can a Type I certification earned on a mail-in test be used toward Universal certification?

    AYes, alwaysBNoCYes, if the score is 84 percent or moreDYes, if the Core section was proctored
11. Question 11 of 24Type II

    System-dependent recovery equipment may not be used on appliances with a full charge above how many pounds, unless it is permanently attached as a pump-out unit?

    A15 poundsB200 poundsC50 poundsD5 pounds
12. Question 12 of 24Type III

    Before removing oil from a low-pressure system, to what temperature should the oil be heated to minimize refrigerant release?

    A212 °FB85 °FC130 °FD104 °F
13. Question 13 of 24Core

    Under 40 CFR 82.152, to "mothball" an appliance means to:

    ASeal it with the full charge inside and lock out its electrical supply for the seasonBRetire it permanentlyCFill it with dry nitrogen and keep it running at reduced loadDEvacuate it to at least atmospheric pressure and temporarily shut it down
14. Question 14 of 24Type I

    Besides the appendix C recovery-percentage test, how else may small-appliance recovery equipment made on or after November 15, 1993 be certified?

    ABy achieving a four-inch vacuum under appendix B conditionsBBy the technician's own statement that it works as designedCBy reaching 0 psig on any gaugeDBy recovering 50 percent of the charge in the test stand
15. Question 15 of 24Type II

    Above what liquid phase saturation pressure at 104 °F is an appliance classed as very high-pressure?

    A45 psiaB355 psiaC170 psiaD500 psia
16. Question 16 of 24Type III

    Which pressurizing methods does EPA list as allowable for a non-major repair on a low-pressure system?

    ANitrogen alone, whatever the refrigerant, because it is inert and leaves no moistureBCompressed air from the shop line after a dryerCControlled hot water and a heating/pressurization device such as PrevacDOxygen from a welding cylinder, with a regulator
17. Question 17 of 24Core

    May equipment used to service R-12 or R-134a systems be used to recover a blend refrigerant?

    AYes, if the technician records the blend's name in the service log firstBNo; it may not be used to charge, recover or recharge a blendCYes, for any HFC blend sold under a SNAP listingDYes, if the blend contains at least some R-134a
18. Question 18 of 24Type I

    How does EPA describe R-22a, a hydrocarbon blend sold for R-22 equipment?

    AA nonflammable, colorless gas that is lighter than air and safe to breatheBA reclaimed grade of HCFC-22CA toxic but nonflammable liquidDA highly flammable, colorless gas that is heavier than air
19. Question 19 of 24Type II

    Besides recovering liquid first, what does EPA list as a way to speed recovery?

    AChilling the appliance being recovered fromBHeating the recovery vesselCChilling the recovery vesselDRecovering vapor before liquid
20. Question 20 of 24Type III

    When recharging an evacuated low-pressure chiller, what should go in first?

    ARefrigerant vaporBLiquid and vapor at the same timeCLiquid first, then vapor to top offDLiquid refrigerant
21. Question 21 of 24Core

    Since what date has the refrigerant sales restriction covered non-exempt substitutes such as HFCs?

    AJuly 1, 1992BNovember 15, 1995CJanuary 1, 2026DJanuary 1, 2018
22. Question 22 of 24Type I

    Who is responsible for ensuring refrigerant is recovered from a small appliance before its final disposal?

    AThe final person in the disposal chain, such as a scrap metal recyclerBThe appliance's original manufacturer, who must take the unit back at the end of its lifeCEPA's regional officeDThe retailer who first sold it, because it holds the sales record
23. Question 23 of 24Type II

    Appendix A of Subpart F warns that refrigerants with low critical temperatures can have what property, which sampling vessels and lines must be built to handle?

    AExtremely low pressureBExtremely high pressureCFreezing at room temperatureDVery high boiling residue
24. Question 24 of 24Type III

    EPA says exposure limits set for chemicals, refrigerants included, are based on what?

    AOzone depletion potentialBAcute exposures onlyCFlammability limitsDChronic toxicity concerns

Where these come from: our app’s practice questions were audited against EPA’s pages and the regulation, and these 24 are taken only from the ones that passed and have not changed since, word for word: six each from Core, Type I, Type II and Type III. Each cites the page or section it rests on. They are practice questions, not questions from the real test.