6.1 The Three Rs: Recover, Recycle, Reclaim

EPA 608 Technician Certification Exam

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1 Introduction to EPA 608 Certification

1.1 What EPA 608 Is and Who Needs It 1.2 Exam Format, Scoring, and Administration 1.3 How to Study for EPA 608

2 Regulations and the Clean Air Act

2.1 Clean Air Act Overview 2.2 Penalties and Enforcement 2.3 Montreal Protocol and International Agreements 2.4 AIM Act and HFC Phasedown Schedule 2.5 SNAP Program and Refrigerant Transitions

3 Refrigerants and Ozone Science

3.1 The Science of Ozone Depletion (ODP and GWP) 3.2 Refrigerant Classification, ASHRAE Numbering, and Safety Groups 3.3 Common Refrigerants: Properties, Applications, and Phaseout Status 3.4 Refrigerant Blends: Glide, Fractionation, and Liquid Charging

4 The Refrigeration Cycle

4.1 The Basic Refrigeration Cycle 4.2 System Components in Detail 4.3 Heat Transfer and Pressure-Temperature Relationships

5 Refrigerant Safety and Handling

5.1 Refrigerant Hazards and Health Effects 5.2 Safe Handling Practices, PPE, and Cylinders 5.3 A2L (Mildly Flammable) Refrigerant Safety

6 Recovery, Recycling, and Reclaiming

6.1 The Three Rs: Recover, Recycle, Reclaim 6.2 Recovery Equipment Requirements 6.3 Required Levels of Evacuation 6.4 Refrigerant Sales Restrictions and Recordkeeping

7 Leak Detection and Repair

7.1 Leak Detection Methods 7.2 Leak Repair Requirements and Trigger Rates 7.3 Leak-Rate Calculation, Recordkeeping, and Reporting

8 Type I — Small Appliances

8.1 What Counts as a Small Appliance 8.2 Type I Recovery Requirements 8.3 Type I Procedures, Access Valves, and the Open-Book Exam

9 Type II — High-Pressure Appliances

9.1 What Type II Covers: High-Pressure System Overview 9.2 Type II Recovery Methods and Required Evacuation Levels 9.3 Leak Detection, the Repair Triggers, and Recordkeeping 9.4 The R-22 Phaseout, Retrofits, and the Move to Lower-GWP A2Ls

10 Type III — Low-Pressure Appliances

10.1 Low-Pressure System Fundamentals 10.2 Purge Units and Air Management 10.3 Type III Recovery and Procedures 10.4 Type III Leak Testing

11 10. Disposal, Shipping, and Compliance

11.1 Equipment Disposal Requirements 11.2 Refrigerant Shipping and Transport 11.3 Compliance Checklist and Best Practices

12 Final Review and Exam Strategy

12.1 High-Yield Core Section Review 12.2 Type I vs Type II vs Type III: Side-by-Side Review 12.3 How the Exam Works and Exam-Day Strategy

6.1 The Three Rs: Recover, Recycle, Reclaim

Key Takeaways Explain This Topic AI

Recover = remove refrigerant and store it with no processing; it is always the first step before opening a system

Recycle = clean on-site via oil separation and filter-driers, but meets no purity standard; reuse limited to the same owner's equipment

Reclaim = reprocess to AHRI Standard 700 (virgin) purity, lab-verified, performed only by an EPA-certified reclaimer

Only reclaimed refrigerant may be sold to a new owner; recycled refrigerant may not

• A certified reclaimer may release no more than 1.5% of the refrigerant during reclamation
• Last updated: October 2026

The Three Rs Are the Heart of Section 608

When a technician opens a refrigeration system, the refrigerant inside cannot simply be vented to the atmosphere — that has been illegal for class I and class II ozone-depleting substances since the Clean Air Act (CAA) venting prohibition took effect July 1, 1992, and the prohibition on venting substitutes such as HFCs took effect November 15, 1995 (a 2016 EPA rule then extended the Section 608 service requirements to non-exempt substitutes from 2017–2019). So the refrigerant must be captured and handled through one of three legally defined processes. The EPA calls them the Three Rs: Recover, Recycle, and Reclaim .

These three words sound similar in everyday speech, but on the EPA 608 exam they have precise, mutually exclusive legal meanings . The single most common mistake test-takers make is treating "recycle" and "reclaim" as synonyms. They are not. The difference between them controls who is allowed to do the work, how clean the refrigerant must be, and — critically — whether the refrigerant can be sold to a new owner. Expect at least one Core question that hinges on this distinction.

Recover — Remove and Store

Recovery means to remove refrigerant in any condition from an appliance and store it in an external container, without necessarily testing or processing it in any way . Recovery is the broadest and simplest of the three.

The refrigerant is pulled out of the system and pushed into an approved container — nothing more is required.

No cleaning, no filtering, no laboratory analysis.

Recovery is always the first step before a system is opened for service, repair, or disposal.

It must be done with EPA-certified recovery equipment into a DOT-approved cylinder .

Think of recovery as "catching" the refrigerant. Whatever moisture, acid, oil, or contaminants were in the system come along with it. Recovery alone tells you nothing about whether the refrigerant is reusable — it only guarantees the refrigerant did not escape to the atmosphere.

Recycle — Clean On-Site for Same-Owner Reuse

Recycling means to clean recovered refrigerant for reuse by reducing contaminants through oil separation and single or multiple passes through devices such as replaceable-core filter-driers . Recycling removes moisture, acidity, and particulate matter, but it does not verify that the refrigerant meets any specific purity specification.

This is the key limitation, and it drives the exam answer: because recycled refrigerant is not proven to meet a purity standard, it can only go back to:

The same system it was recovered from, or

Other systems owned by the same person or company .

Recycling typically happens on-site with the technician's own recovery/recycling machine. It is fast and convenient, but the refrigerant is "trapped" within that owner's equipment. Recycled refrigerant may not be sold or transferred to a new owner — to change hands, it must first be reclaimed.

Example: A facility's recovery/recycling machine pulls R-410A from a rooftop unit, runs it through the unit's filter-drier, and charges it back into a different rooftop unit at the same shopping mall. That is legal recycling. If the same facility tried to sell that R-410A to a contractor across town, it would be illegal — recycled refrigerant cannot be sold to a new owner.

Reclaim — Reprocess to New-Product Purity

Reclamation is the most rigorous process. It means to reprocess recovered refrigerant to at least the purity specified in AHRI Standard 700 (the Air-Conditioning, Heating, and Refrigeration Institute's purity standard, equivalent to new/virgin refrigerant) and to verify that purity using the chemical-analysis methods prescribed in the standard .

Reclamation is not something a field technician can do with a service machine. Three rules define it:

It may only be performed by an EPA-certified reclaimer (the company files an application and is listed by EPA).

Each batch must be laboratory-tested and certified to meet AHRI 700 purity.

Because reclaimed refrigerant is chemically equivalent to virgin product, it can be sold to any new owner .

EPA also caps process losses: a certified reclaimer may release no more than 1.5% of the refrigerant during the reclamation process, and must dispose of any wastes lawfully.

Side-by-Side: Recover vs. Recycle vs. Reclaim

Aspect Recover Recycle Reclaim

Definition Remove and store, no processing Clean on-site (oil sep + filter-drier) Reprocess to AHRI 700 purity + lab verify

• Purity standard None No specific standard AHRI Standard 700 (= virgin)
• Who may perform Certified technician Certified technician EPA-certified reclaimer ONLY
• Where it happens On-site Usually on-site Off-site reclamation facility
• May be reused by Same owner/system Same owner's systems Anyone
• May be sold to a new owner? No (until reclaimed) No (until reclaimed) Yes
• Process-loss limit n/a n/a No more than 1.5% released
• Recordkeeping for Reclaimers

Reclaimers must keep records of the names and addresses of persons sending refrigerant for reclamation and the quantity received.

Records are maintained on a transactional basis .

Technicians who send refrigerant out must keep records of what was recovered and where it went.

For the Exam: The make-or-break distinction — recycled refrigerant can only return to the same owner's equipment; only reclaimed refrigerant (AHRI 700 purity, certified reclaimer) can be sold to a new owner .