EPA 608 HVAC Certification Exam
Regulations Practice Questions
35 practice questions with detailed explanations — aligned to the EPA 608 HVAC Certification Exam.
Q1.Under EPA Section 608, who is responsible for ensuring that refrigerant is recovered before the final disposal of an appliance?
A.The final person in the disposal chainB.The original manufacturerC.The last owner of the applianceD.The EPAA. The final person in the disposal chainExplanation: The final person in the disposal chain (e.g., the scrap metal recycler or landfill operator) is responsible for ensuring refrigerant has been recovered.
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Q2.How long must technicians and owners/operators keep records of leak inspections, initial verification tests, and follow-up verification tests?
A.1 yearB.3 yearsC.5 yearsD.IndefinitelyB. 3 yearsExplanation: Records regarding leak inspections and repairs for appliances with 50+ lbs of refrigerant must be kept for 3 years.
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Q3.Which of the following people can legally purchase R-410A refrigerant in cylinders larger than 2 pounds?
A.Anyone over 18B.A certified Section 608 technicianC.A licensed plumberD.An automotive mechanic (Section 609)B. A certified Section 608 technicianExplanation: The sale of ODS and substitute refrigerants (like HFCs) is restricted to technicians certified under Section 608 (or 609 for MVAC specifically, but R-410A is not MVAC).
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Q4.To be certified as a Universal Technician, a person must pass:
A.The Core section onlyB.The Core section plus Type I, Type II, and Type IIIC.The Core section plus Type I and Type IID.A practical skills examB. The Core section plus Type I, Type II, and Type IIIExplanation: Universal certification requires passing the Core section and all three Type sections (I, II, and III).
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Q5.What is the monetary reward potentially available to a person who supplies information that leads to a penalty against a technician who intentionally vents refrigerant?
A.$5,000B.$10,000C.Up to $10,000D.There is no reward systemC. Up to $10,000Explanation: The EPA is authorized to pay an award of up to $10,000 to any person who furnishes information causing a criminal conviction or penalty for Clean Air Act violations.
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Q6.A technician who has lost their certification card must:
A.Retake the examB.Contact the organization that issued the card for a replacementC.Contact the EPA directlyD.Print a new one at homeB. Contact the organization that issued the card for a replacementExplanation: The EPA does not issue cards directly or keep a central database of individual technicians. You must contact the certifying organization.
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Q7.If a technician is disposing of an appliance with 5-50 lbs of refrigerant, they must:
A.Keep records of the disposal for 3 yearsB.Notify the EPAC.Report the disposal to the wholesalerD.Destroy the applianceA. Keep records of the disposal for 3 yearsExplanation: Technicians disposing of mid-sized appliances (5-50 lbs) must keep records verifying the recovery of refrigerant for 3 years.
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Q8.Which of the following releases is NOT considered a violation of the prohibition on venting?
A.Releasing nitrogen/trace gas mixtures used for leak detectionB.Releasing R-22 to lower head pressureC.Releasing R-410A because it has 0 ODPD.Releasing refrigerant from a hose without low-loss fittingsA. Releasing nitrogen/trace gas mixtures used for leak detectionExplanation: Small releases of refrigerant mixed with nitrogen for leak checking are considered 'De Minimis' and are exempt from the venting prohibition.
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Q9.When must an appliance be evacuated to atmospheric pressure (0 psig)?
A.Before disposalB.When leaks make evacuation to the prescribed level impossibleC.AlwaysD.NeverB. When leaks make evacuation to the prescribed level impossibleExplanation: If leaks are significant enough that pulling a vacuum would draw in air, the EPA allows evacuation to 0 psig instead of the deep vacuum levels.
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Q10.Under EPA regulations, a 'Motor Vehicle Air Conditioner' (MVAC) service requires:
A.Section 609 certificationB.Section 608 Type I certificationC.Section 608 Type II certificationD.Section 608 Universal certificationA. Section 609 certificationExplanation: MVAC service is covered under Section 609. Section 608 Type I/II certifications do NOT cover motor vehicles.
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Q11.Who must certify recovery equipment used for stationary refrigeration and air conditioning?
A.The technician using itB.The EPAC.An EPA-approved laboratoryD.The wholesalerC. An EPA-approved laboratoryExplanation: Recovery equipment must be tested and certified by an EPA-approved third-party laboratory (like UL or AHRI) to ensure it meets evacuation standards.
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Q12.Which of the following is NOT required on the invoice provided to the customer after adding refrigerant to a system containing 50+ lbs?
A.The amount of refrigerant addedB.The leak rate calculationC.The date of serviceD.The technician's certification numberD. The technician's certification numberExplanation: While good practice, the technician's certification number is not strictly required on the customer invoice by EPA 608. However, the amount added and leak rate (if applicable) are critical recordkeeping elements for the owner.
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Q13.Refrigerant that is 'Recycled' (cleaned) can be used:
A.In any applianceB.Only in the same appliance or another appliance owned by the same ownerC.Only in motor vehiclesD.Only in new appliancesB. Only in the same appliance or another appliance owned by the same ownerExplanation: Recycled refrigerant (which is cleaned but not analyzed) cannot be sold or transferred to a different owner. It stays with the original owner.
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Q14.If a technician purchases a pre-charged split system, do they need to be certified?
A.No, because the refrigerant is containedB.Yes, buying any appliance with regulated refrigerant requires certificationC.Yes, buying components containing regulated refrigerant requires certificationD.No, only if they buy cylindersC. Yes, buying components containing regulated refrigerant requires certificationExplanation: The sales restriction applies to refrigerant sold in cylinders AND pre-charged parts (like condensing units) that utilize regulated refrigerants.
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Q15.What does the EPA require regarding the disposal of mid-sized appliances (5-50 lbs)?
A.The owner must keep records of the location of the disposal siteB.The technician must evacuate the appliance to 10 inches Hg vacuum (or 0 for small)C.The technician must verify removal of refrigerantD.All of the aboveC. The technician must verify removal of refrigerantExplanation: The key regulatory burden at disposal is verifying/documenting that the refrigerant was removed to the required level prior to crushing/landfilling.
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Q16.Which record must be kept by a reclaimer?
A.The names and addresses of all persons sending them refrigerantB.The quantity of material sent to them for reclamationC.The mass of refrigerant reclaimedD.All of the aboveD. All of the aboveExplanation: Reclaimers are subject to strict reporting requirements to track the flow of ODS and HFCs, including who sent it and how much was processed.
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Q17.Is it legal to vent R-600a (Isobutane) from a household refrigerator?
A.No, all refrigerants must be recoveredB.Yes, as an exempt substituteC.Only if it is mixed with nitrogenD.Only if you have a permitB. Yes, as an exempt substituteExplanation: Certain substitutes, like hydrocarbons (R-600a, R-290) in specific applications, are exempt from the venting prohibition because they do not deplete ozone or have high GWP.
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Q18.An apprentice can buy refrigerant if:
A.They are under the direct supervision of a certified technicianB.They have a letter from their employerC.They show a student IDD.They cannot buy refrigerantD. They cannot buy refrigerantExplanation: Only certified technicians can purchase regulated refrigerants. Apprentices cannot purchase them, even with supervision letters (though they can *use* them under supervision).
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Q19.When did the sales restriction on HFC refrigerants (like R-410A and R-134a) go into effect?
A.November 14, 1994B.January 1, 2018C.July 1, 1992D.January 1, 2020B. January 1, 2018Explanation: The 2016 update to Section 608 extended the sales restriction to HFCs starting January 1, 2018.
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Q20.For leak repair regulations, what is the definition of 'Full Charge'?
A.The amount of refrigerant on the nameplateB.The amount required for normal operation as determined by the owner/operatorC.80% of the receiver capacityD.The amount held in the recovery tankB. The amount required for normal operation as determined by the owner/operatorExplanation: Full charge is the amount of refrigerant required for normal operation, determined by using the equipment nameplate, established charts, or calculations.
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Q21.A 'retrofit' procedure usually involves:
A.Changing the appliance to use a different refrigerantB.Repairing a leakC.Replacing the compressor with an identical modelD.Cleaning the coilsA. Changing the appliance to use a different refrigerantExplanation: Retrofitting involves converting a system to use a different refrigerant (e.g., converting R-22 to R-407C), often requiring component or oil changes.
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Q22.What happens if a technician cannot repair a leak in a comfort cooling appliance within 30 days?
A.They must pay a fineB.They may request an extension if specific conditions are metC.They must vent the remaining chargeD.They must surrender their licenseB. They may request an extension if specific conditions are metExplanation: Extensions to the 30-day repair window are available for specific reasons (e.g., parts unavailability, regulations), but must be documented.
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Q23.When verifying a leak repair, which test is required?
A.Only an initial verification testB.Only a follow-up verification testC.Both an initial and a follow-up verification testD.A standing pressure test onlyC. Both an initial and a follow-up verification testExplanation: Regulations require BOTH an initial verification test (before charging) and a follow-up verification test (after the system is running) for appliances ≥50 lbs.
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Q24.A 'Mothballed' system is one that:
A.Has been evacuated to 0 psigB.Has been temporarily shut down and the refrigerant recovered to the required levelC.Is leakingD.Is running at low capacityB. Has been temporarily shut down and the refrigerant recovered to the required levelExplanation: Mothballing involves shutting down a system and recovering the refrigerant to suspend leak repair timelines.
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Q25.Which certification allows a technician to work on low-pressure chillers?
A.Type IB.Type IIC.Type IIID.Type IVC. Type IIIExplanation: Type III certification covers low-pressure appliances.
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Q26.Under the 'Safe Disposal Requirements', who is responsible for removing refrigerant from a discarded home air conditioner?
A.The homeownerB.The city trash collectorC.The final person in the disposal chainD.The manufacturerC. The final person in the disposal chainExplanation: The final entity in the disposal chain (e.g., scrap yard, landfill) bears the responsibility, although they may require the customer to provide documentation that it was already removed.
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Q27.Wholesalers who sell refrigerant must keep records of:
A.The quantity soldB.The date of saleC.The purchaser's name and certification numberD.All of the aboveD. All of the aboveExplanation: Wholesalers must verify certification and keep detailed sales logs.
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Q28.A revocation of a technician's certification is:
A.TemporaryB.PermanentC.Appealable only to the PresidentD.ImpossibleB. PermanentExplanation: The EPA can permanently revoke certifications for violations of the Clean Air Act.
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Q29.The leak repair regulations apply to appliances containing at least how much refrigerant?
A.5 lbsB.15 lbsC.50 lbsD.200 lbsC. 50 lbsExplanation: The mandatory leak repair and inspection provisions (for comfort cooling, commercial, IPR) apply to appliances with a full charge of 50 pounds or more.
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Q30.If an appliance with 50+ lbs of refrigerant leaks 125% of its full charge in a calendar year, what must be done?
A.It must be replacedB.A report must be submitted to the EPAC.Nothing, if it was repairedD.The owner must pay a taxB. A report must be submitted to the EPAExplanation: Systems that leak 125% or more of their full charge in a calendar year require a specific report to the EPA describing the repair efforts.
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Q31.Can a technician use a disposable cylinder to recover refrigerant?
A.Yes, if it is emptyB.No, neverC.Yes, if it has a check valveD.Yes, for small appliances onlyB. No, neverExplanation: Disposable cylinders (DOT-39) are not rated for the pressure/handling of recovery and lack proper valves. They are for virgin gas only.
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Q32.Which of the following is an example of a 'Comfort Cooling' appliance?
A.A supermarket rack systemB.A cold storage warehouseC.An office building air conditionerD.A chemical process chillerC. An office building air conditionerExplanation: Comfort cooling refers to air conditioning used for human comfort (offices, residential, commercial AC). Supermarkets are commercial refrigeration; chemical chillers are IPR.
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Q33.What is the definition of a 'Seasonal Variance' in leak rate calculations?
A.The adjustment made for temperature changesB.The removal of refrigerant for seasonal storageC.The addition of refrigerant due to a leakD.The change in price of refrigerantB. The removal of refrigerant for seasonal storageExplanation: When calculating leak rates, the addition/removal of refrigerant for seasonal variances (like seasonal storage) is NOT considered a leak.
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Q34.Can a certified technician lend their certification card to a coworker to buy refrigerant?
A.Yes, if they work for the same companyB.No, certification is non-transferableC.Yes, for one purchase onlyD.Yes, if the coworker is an apprenticeB. No, certification is non-transferableExplanation: Certification belongs to the individual and cannot be transferred or loaned.
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Q35.Refrigerant cylinders that are being returned to a reclaimer must be:
A.Filled to the topB.EmptyC.Labeled, free of leaks, and free of visible damage/rustD.Painted greenC. Labeled, free of leaks, and free of visible damage/rustExplanation: Cylinders must meet DOT safety standards (no rust/damage) and be properly labeled before shipping.
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