11.6 - Master Recovery and Evacuation Tables

Module: Standalone Reference Appendices and Instructor Resources
Purpose: One master lookup for Section 608 refrigerant-recovery percentages, appliance evacuation levels, charge thresholds, equipment-date conditions, and the principal exceptions that change the normal evacuation requirement
Regulatory verification date: August 14, 2026
Primary authority: 40 CFR §§ 82.152, 82.156, and 82.158; current EPA Section 608 service-practice and evacuation guidance
Scope note: This appendix consolidates requirements already taught in Modules 5, 7, 8, and 9. It does not replace the detailed service procedures, safety requirements, or manufacturer instructions in those modules.

How to Use This Reference

When a question asks how much refrigerant must be removed or how far an appliance must be evacuated, identify the conditions in this order:

1. SMALL APPLIANCE OR NOT?
2. APPLIANCE PRESSURE CATEGORY?
3. FULL CHARGE?
4. RECOVERY-EQUIPMENT MANUFACTURE / IMPORT DATE?
5. FUNCTIONING OR NONFUNCTIONING COMPRESSOR, IF TYPE I?
6. NORMAL TABLE 1 CONDITION OR A QUALIFYING EXCEPTION?
7. SERVICE / REPAIR / OIL CHANGE / DISPOSAL?

Do not memorize a number by itself.

Memorize:

VALUE
+
UNIT
+
APPLIANCE
+
CHARGE CONDITION
+
EQUIPMENT-DATE CONDITION
+
EXCEPTION, IF ANY

For example:

15 in. Hg vacuum
→ medium-pressure appliance
→ full charge ≥200 lb
→ recovery/recycling equipment manufactured or imported
   on or after November 15, 1993

The most important warning in this appendix is:

NOVEMBER 15, 1993
→ RECOVERY / RECYCLING EQUIPMENT DATE
→ NOT THE APPLIANCE MANUFACTURE DATE

1. Master Decision Summary

Table control

• Source: 40 CFR § 82.156(a)-(e); 40 CFR § 82.152
• Units: Percent refrigerant recovered, in. Hg vacuum, mm Hg absolute, psig, and pounds of full charge as labeled
• Conditions: Use only after identifying appliance category and any special exception
• Historical warning: The pre-November 15, 1993 equipment pathways remain in the current regulation. They are not merely obsolete historical values.

2. Small-Appliance Recovery Requirements

A small appliance is handled under a separate recovery rule rather than the normal Table 1 used for other stationary appliances.

Before opening or disposing of a small appliance, refrigerant must be recovered using qualifying recovery/recycling equipment according to the current conditions below.

2.1 Small-Appliance Percentage Pathways

Table control

• Source: 40 CFR § 82.156(b)(1)-(3); EPA Stationary Refrigeration Service Practice Requirements
• Units: Percent of refrigerant recovered, or in. Hg vacuum
• Conditions: Small appliance as defined in 40 CFR § 82.152
• Historical warning: The pre-1993 row remains a current regulatory pathway when qualifying older recovery equipment is actually used.

Fast Type I Memory Rule

OLD RECOVERY EQUIPMENT
→ 80% EITHER WAY

POST-1993 RECOVERY EQUIPMENT
+ COMPRESSOR WORKS
→ 90%

POST-1993 RECOVERY EQUIPMENT
+ COMPRESSOR FAILED
→ 80%

ALTERNATIVE
→ 4 in. Hg vacuum

2.2 What the November 15, 1993 Date Refers To

Table control

• Source: 40 CFR §§ 82.156(b) and 82.158(e)
• Units: Calendar date; no pressure unit
• Conditions: Small-appliance recovery pathway
• Historical warning: This is a current date-based distinction, not simply a historical fact.

Exam trap: A question may describe a very old refrigerator and a newer recovery machine. Use the recovery machine date, not the refrigerator date.

3. Current Table 1 Service-Practice Evacuation Levels

For appliances other than small appliances, MVACs, and MVAC-like appliances, technicians must normally recover all liquid refrigerant and evacuate the appliance or isolated portion to the applicable level in current Table 1 of 40 CFR § 82.156 before opening or disposal, unless one of the specified exceptions applies.

3.1 Master Table 1

Table control

• Source: 40 CFR § 82.156(a), Table 1; EPA Required Level of Evacuation of Appliances
• Units: Inches of mercury vacuum relative to standard atmospheric pressure of 29.9 in. Hg, except the low-pressure row, which is stated as mm Hg absolute
• Conditions: Appliances other than small appliances, MVACs, and MVAC-like appliances; normal Table 1 condition
• Historical warning: The two date columns remain in the current regulation. “Pre-1993” does not mean the left column may be ignored if qualifying older recovery/recycling equipment is used.

One-Line Memory Pattern

VERY HIGH
→ 0 / 0

HIGH <200
→ 0 / 0

HIGH ≥200
→ 4 / 10

MEDIUM <200
→ 4 / 10

MEDIUM ≥200
→ 4 / 15

LOW
→ 25 mm Hg absolute / 25 mm Hg absolute

The order above is:

PRE-NOV. 15, 1993 RECOVERY EQUIPMENT
/
ON-OR-AFTER-NOV. 15, 1993 RECOVERY EQUIPMENT

4. Table 1 Date Rule

The date distinction in Table 1 is often misread.

It refers to the date the:

RECOVERY AND/OR RECYCLING EQUIPMENT

was:

MANUFACTURED OR IMPORTED

It does not refer to the date the appliance itself was manufactured.

4.1 Date Interpretation Table

Table control

• Source: 40 CFR § 82.156(a), Table 1
• Units: Calendar date
• Conditions: Normal Table 1 service-practice evacuation
• Historical warning: Both columns are current regulatory text.

5. Pressure Categories Used With Table 1

The appliance pressure category must be determined before Table 1 can be used correctly.

5.1 Pressure-Category Reference

Table control

• Source: 40 CFR § 82.152
• Units: psia at 104°F; critical temperature in °F for the very-high-pressure criterion
• Conditions: Refrigerant liquid-phase saturation pressure definition
• Historical warning: Use current regulatory definitions rather than an old refrigerant chart.

For a detailed explanation of the pressure-classification system, see 11.4 - Refrigerant Pressure and Safety Classification Reference.md.

6. Charge Thresholds That Change the Answer

Several different charge numbers appear in the course. They do not mean the same thing.

6.1 Master Charge-Threshold Map

Table control

• Source: 40 CFR §§ 82.152 and 82.156; cross-reference to § 82.157 where noted
• Units: Pounds of refrigerant at full charge
• Conditions: Each threshold applies only in the specific context shown
• Historical warning: Do not transfer a threshold from one rule to another.

High-Priority Distinction

200 lb
→ EVACUATION TABLE BOUNDARY

50 lb
→ LEAK-REPAIR APPLICABILITY CONTEXT

15 lb
→ SYSTEM-DEPENDENT EQUIPMENT LIMIT

5 lb
→ SMALL-APPLIANCE DEFINITION CONTEXT

Do not interchange these numbers.

7. Type II Evacuation Lookup

This section extracts only the medium-, high-, and very-high-pressure rows used most often in Type II questions.

7.1 Type II Table

Table control

• Source: 40 CFR § 82.156(a), Table 1
• Units: in. Hg vacuum relative to 29.9 in. Hg standard atmospheric pressure
• Conditions: Normal Table 1 condition; Type II appliance; not a small appliance or MVAC/MVAC-like appliance
• Historical warning: The pre-1993 equipment column is still current law for qualifying equipment.

Type II Exam Traps

R-410A
→ high pressure
→ not very high pressure

HIGH <200 lb
→ 0 / 0

MEDIUM ≥200 lb
→ 4 / 15

8. Type III Low-Pressure Requirement

Low-pressure appliances use a different unit and do not change at the 200-pound boundary.

8.1 Type III Table

Table control

• Source: 40 CFR § 82.156(a), Table 1
• Units: mm Hg absolute
• Conditions: Normal Table 1 low-pressure appliance condition
• Historical warning: The same value applies in both recovery-equipment date columns.

Type III Memory Rule

LOW PRESSURE
→ 25 mm Hg ABSOLUTE

This is true:

• In both equipment-date columns.
• Without a 200-pound split.

Do Not Confuse the Unit

25 mm Hg absolute
≠
25 in. Hg vacuum

Also:

25 mm Hg absolute
=
25,000 microns

The Table 1 value is a refrigerant-removal endpoint, not a generic deep-dehydration target.

See 11.2 - Acronyms Symbols Units and Conversions.md for vacuum-scale interpretation.

9. Normal Table 1 Requirement Versus Qualifying Exceptions

Normal Table 1 is the starting rule.

The principal exceptions in § 82.156(a) apply only when their conditions are actually satisfied.

9.1 Exception Summary

Table control

• Source: 40 CFR § 82.156(a)(1)-(2); EPA Stationary Refrigeration Service Practice Requirements
• Units: psig and Table 1 units as specified
• Conditions: Apply only to the specific exception shown
• Historical warning: Current exception values must not be replaced with older study-guide summaries.

10. Major Maintenance, Service, or Repair

The current definition determines whether the special non-major opening pathway can be considered.

10.1 Major-Repair Definition

Table control

• Source: 40 CFR § 82.152
• Units: Component identity, square inches of flow area, and minutes
• Conditions: Federal definition of “major maintenance, service, or repair”
• Historical warning: Use the current definition; do not substitute an informal idea of a “big job.”

Major Memory Rule

COMPRESSOR
CONDENSER
EVAPORATOR
AUXILIARY HEAT-EXCHANGE COIL

or:

>4 in² FLOW AREA
FOR
>15 min

means:

MAJOR

11. Major Versus Non-Major Evacuation Logic

11.1 Decision Table

Table control

• Source: 40 CFR §§ 82.152 and 82.156(a)(1)
• Units: psig or applicable Table 1 unit
• Conditions: The non-major pathway applies only when the full conditions of § 82.156(a)(1) are met
• Historical warning: “Non-major” does not mean “no recovery required.”

Important Wording

Do not reduce the rule to:

NON-MAJOR
→ ALWAYS 0 psig

The correct concept is:

QUALIFYING NON-MAJOR CONDITION
under §82.156(a)(1)
→ special 0-psig pathway

12. Low-Pressure Non-Major Pressurization Rules

Low-pressure appliances require special care because they often operate below atmospheric pressure.

12.1 Low-Pressure Method Table

Table control

• Source: 40 CFR § 82.156(a)(1)(ii)
• Units: psig, °F, and in. Hg standard atmospheric pressure reference
• Conditions: Qualifying non-major opening under § 82.156(a)(1)
• Historical warning: Do not replace the current boiling-point conditions with a simplified universal “use nitrogen” rule.

Persons must cover openings when isolation is not possible.

13. Leak Exception When Table 1 Cannot Be Reached

A leak does not provide general permission to stop recovery early.

The current rule applies when leaks:

• Make the Table 1 level unattainable, or
• Would substantially contaminate the refrigerant being recovered.

13.1 Leak-Exception Sequence

Table control

• Source: 40 CFR § 82.156(a)(2)
• Units: Applicable Table 1 units and psig
• Conditions: Leak prevents prescribed evacuation or would substantially contaminate recovered refrigerant
• Historical warning: The current rule requires different treatment of leaking and non-leaking portions where possible.

What the Leak Exception Does Not Mean

Incorrect:

LEAK
→ STOP RECOVERY WHENEVER CONVENIENT

Incorrect:

LEAK
→ VENT THE REMAINDER

Correct:

ISOLATE WHERE POSSIBLE
→ TABLE 1 FOR NON-LEAKING PORTIONS
→ LOWEST ATTAINABLE, NOT ABOVE 0 psig,
   FOR LEAKING PORTIONS

14. Oil-Change Provision

Refrigerant can remain dissolved in compressor oil.

The regulation therefore establishes a separate pressure condition for oil changes.

14.1 Oil-Change Table

Table control

• Source: 40 CFR § 82.156(a)(1)(iii); EPA Stationary Refrigeration Service Practice Requirements
• Units: psig
• Conditions: Oil-change purpose
• Historical warning: The 5-psig oil-change provision is separate from the normal Table 1 endpoint and from the Type III 10-psig leak-test exam value.

Do Not Confuse

5 psig
→ OIL-CHANGE PROVISION

with:

0 psig
→ QUALIFYING NON-MAJOR OPENING / LEAK-EXCEPTION CEILING

or:

25 mm Hg absolute
→ NORMAL TYPE III TABLE 1 ENDPOINT

15. Isolating the Portion Being Serviced

A technician does not always have to evacuate the entire appliance.

If refrigerant in the part to be serviced can be isolated to a system receiver, the technician may evacuate:

THE ENTIRE APPLIANCE
OR
THE PART TO BE SERVICED

The applicable endpoint still must be verified before the part is opened.

15.1 Isolation Table

Table control

• Source: 40 CFR § 82.156(a)
• Units: Same endpoint units as the applicable Table 1 row
• Conditions: Refrigerant in the part can be isolated to a system receiver
• Historical warning: Isolation changes how much of the appliance must be evacuated, not the required endpoint for the portion being opened.

16. System-Dependent Recovery Equipment

System-dependent equipment needs the appliance’s own components to help move refrigerant.

Current § 82.156 contains an important charge limitation.

16.1 System-Dependent Equipment Limit

Table control

• Source: 40 CFR §§ 82.152 and 82.156(e)
• Units: Pounds of full charge
• Conditions: Use of system-dependent recovery equipment
• Historical warning: This is a current restriction and should not be confused with the small-appliance 5-lb definition.

Memory Rule

>15 lb
→ NO SYSTEM-DEPENDENT RECOVERY EQUIPMENT

unless:

PERMANENTLY ATTACHED PUMP-OUT UNIT

17. Recovery Equipment Certification Date Versus Service Endpoint Date

Several equipment-certification dates appear in current § 82.158.

The key exam distinction is that November 15, 1993 changes the service-recovery/evacuation pathways in § 82.156.

Later dates such as September 22, 2003 and January 1, 2017 relate primarily to equipment certification test standards.

17.1 Equipment-Date Purpose Table

Table control

• Source: 40 CFR § 82.158(c)-(e)
• Units: Calendar dates
• Conditions: Recovery/recycling equipment certification and service-practice interpretation
• Historical warning: Do not use the 2003 or 2017 certification-standard dates to choose the pre/post-1993 Table 1 column.

For exam questions asking:

WHICH TABLE 1 COLUMN?

focus on:

NOVEMBER 15, 1993

18. Table 1 Versus Recovery-Equipment Certification Table

Students can encounter two different federal tables.

They are related but do not answer the same question.

18.1 Table-Purpose Comparison

Table control

• Source: 40 CFR §§ 82.156 and 82.158
• Units: Evacuation units as specified in the controlling table
• Conditions: Distinguish technician service endpoint from equipment certification capability
• Historical warning: Do not substitute § 82.158 Table 2 for the technician service requirement in § 82.156 Table 1.

For this appendix, the controlling technician lookup is:

§82.156 TABLE 1

19. MVAC and MVAC-Like Disposal Boundary

MVACs and MVAC-like appliances are excluded from the normal § 82.156 Table 1.

For disposal recovery, current § 82.156 provides a separate pathway.

19.1 Disposal Boundary Table

Table control

• Source: 40 CFR § 82.156(c)-(d)
• Units: mm Hg vacuum, or the applicable Subpart B evacuation requirement
• Conditions: Refrigerant recovery for purposes of disposal of MVAC-like appliances or MVACs
• Historical warning: Do not apply stationary Table 1 values to these appliance categories.

This is a boundary reference only. Ordinary MVAC service and Section 609 procedures are treated separately in Module 1.

20. Disposal Recordkeeping Charge Range

This appendix focuses on recovery and evacuation, but one charge range appears directly inside § 82.156 and is therefore worth keeping with the master tables.

20.1 Disposal Recovery Record Range

Table control

• Source: 40 CFR § 82.156(a)(3)
• Units: Pounds of refrigerant at full charge; years of record retention
• Conditions: Technicians evacuating refrigerant for purposes of disposal of the appliance
• Historical warning: Use the exact current range; do not casually restate it as “5 to 50 lb.”

Detailed disposal-record categories are consolidated in 11.11 - Safe Disposal and Refrigerant Transfer Reference.md.

21. Worked Lookup Examples

Example 1 - High Pressure, 150 lb, Newer Recovery Machine

Given:

• High-pressure appliance.
• Full charge = 150 lb.
• Recovery/recycling equipment manufactured in 2018.
• Normal Table 1 condition.

Reasoning:

HIGH PRESSURE
+
<200 lb
+
post-1993 equipment
→ 0 in. Hg vacuum

Required endpoint:

0 in. Hg vacuum

Example 2 - High Pressure, 250 lb, Newer Recovery Machine

Given:

• High-pressure appliance.
• Full charge = 250 lb.
• Recovery/recycling equipment manufactured in 2018.

Reasoning:

HIGH PRESSURE
+
≥200 lb
+
post-1993 equipment
→ 10 in. Hg vacuum

Required endpoint:

10 in. Hg vacuum

Example 3 - Medium Pressure, 250 lb, Newer Recovery Machine

Given:

• Medium-pressure appliance.
• Full charge = 250 lb.
• Recovery/recycling equipment manufactured in 2020.

Reasoning:

MEDIUM PRESSURE
+
≥200 lb
+
post-1993 equipment
→ 15 in. Hg vacuum

Required endpoint:

15 in. Hg vacuum

Example 4 - Medium Pressure, 100 lb, Pre-1993 Recovery Machine

Given:

• Medium-pressure appliance.
• Full charge = 100 lb.
• Recovery equipment manufactured before November 15, 1993.

Reasoning:

MEDIUM PRESSURE
+
<200 lb
+
pre-1993 equipment
→ 4 in. Hg vacuum

Required endpoint:

4 in. Hg vacuum

Example 5 - Low-Pressure Chiller, 600 lb

Given:

• Low-pressure appliance.
• Full charge = 600 lb.
• Recovery equipment manufactured after November 15, 1993.

Reasoning:

The 200-lb split does not apply to the low-pressure row.

Required endpoint:

25 mm Hg absolute

Example 6 - Small Appliance, Compressor Works, Newer Recovery Machine

Given:

• Qualifying small appliance.
• Compressor functions.
• Recovery equipment manufactured in 2022.

Percentage pathway:

90%

Alternative:

4 in. Hg vacuum

Example 7 - Small Appliance, Compressor Failed, Newer Recovery Machine

Given:

• Qualifying small appliance.
• Compressor does not function.
• Recovery equipment manufactured in 2022.

Percentage pathway:

80%

Alternative:

4 in. Hg vacuum

Example 8 - Small Appliance, Compressor Works, Old Recovery Machine

Given:

• Qualifying small appliance.
• Compressor functions.
• Recovery equipment manufactured before November 15, 1993.

Percentage pathway:

80%

The operating compressor does not raise the percentage to 90% when the pre-1993 equipment pathway applies.

Example 9 - Leak Prevents Normal Table 1 Vacuum

Given:

• A high-pressure appliance has a leak.
• The leak makes the prescribed Table 1 endpoint unattainable.
• Leaking and non-leaking components can be isolated.

Required sequence:

ISOLATE
→ NON-LEAKING PORTION TO TABLE 1
→ LEAKING PORTION TO LOWEST ATTAINABLE LEVEL
   WITHOUT SUBSTANTIAL CONTAMINATION
→ NEVER ABOVE 0 psig

Example 10 - Oil Change

Given:

• Oil must be removed from a refrigeration appliance.
• The oil contains dissolved refrigerant.

Current opening provision:

≤5 psig

before the oil-change opening, or use the system-receiver pathway described in § 82.156(a)(1)(iii).

22. Commonly Confused Values

Table control

• Source: 40 CFR §§ 82.152 and 82.156; EPA Section 608 service-practice guidance
• Units: As shown
• Conditions: Exam-preparation comparison only; each value remains tied to its actual regulatory context
• Historical warning: Do not use numerical similarity as a substitute for identifying the rule.

23. Historical-Value and Date Warnings

23.1 “Pre-1993” Does Not Mean Obsolete

The left column of current Table 1 is still in the current eCFR.

Therefore:

PRE-1993 EQUIPMENT VALUE
≠
OBSOLETE VALUE

It is a current date-conditioned regulatory value for qualifying older recovery/recycling equipment.

23.2 The Appliance Date Does Not Select Table 1

Incorrect:

APPLIANCE BUILT IN 1990
→ USE PRE-1993 COLUMN

Correct:

RECOVERY / RECYCLING EQUIPMENT
MANUFACTURED OR IMPORTED BEFORE NOV. 15, 1993
→ USE PRE-1993 COLUMN

23.3 Do Not Import Old Leak-Repair Values Into This Table

Older study guides can contain historical leak-rate values such as 15% and 35%.

Those are not evacuation values and do not belong in the Table 1 selection process.

Current leak-repair rules are consolidated separately in:

11.7 - Leak Repair Recordkeeping and Regulatory Reference.md

24. EPA 608 Exam Focus

Numbers to Know With Their Conditions

80%
90%
4 in. Hg vacuum

→ Type I small-appliance recovery pathways.

0 / 0
4 / 10
4 / 15
25 mm Hg absolute

→ Table 1 patterns.

200 lb

→ high/medium pressure Table 1 split.

15 lb

→ system-dependent recovery-equipment restriction.

0 psig

→ qualifying non-major opening and leaking-component ceiling in the specified current provisions.

5 psig

→ oil-change provision.

>4 in² for >15 min

→ numerical major-maintenance/service/repair criterion.

Best Exam Strategy

For every evacuation question, mark the stem for:

1. Small appliance?
2. Pressure category?
3. Charge above or below 200 lb?
4. Recovery-equipment date?
5. Compressor functioning?
6. Major or qualifying non-major?
7. Leak exception?
8. Oil change?
9. Units?

25. Common Mistakes and Confusing Points

Mistake 1 - Using the Appliance Manufacture Date

The November 15, 1993 distinction applies to recovery/recycling equipment, not the appliance.

Mistake 2 - Forgetting the Compressor Condition for Type I

With post-1993 recovery equipment:

WORKS → 90%
FAILED → 80%

Mistake 3 - Applying 90% to Pre-1993 Recovery Equipment

Pre-1993 small-appliance recovery equipment uses the 80% percentage pathway whether or not the compressor works.

Mistake 4 - Forgetting the 4 in. Hg Type I Alternative

The current regulation permits evacuation of the small appliance to 4 in. Hg vacuum as an alternative recovery endpoint.

Mistake 5 - Using the 200-lb Split for Low Pressure

Low-pressure appliances remain:

25 mm Hg absolute

in both equipment-date columns.

Mistake 6 - Calling R-410A Very High Pressure

R-410A is a representative high-pressure refrigerant in the current Section 608 definition.

Mistake 7 - Confusing 0 in. Hg Vacuum With 0 psig Without Context

Table 1 states certain endpoints in in. Hg vacuum.

The non-major/leak provisions use psig.

Always preserve the unit and rule context.

Mistake 8 - Calling 25 mm Hg Absolute a Deep-Dehydration Target

It is the current low-pressure Table 1 refrigerant-removal endpoint.

Deep evacuation/dehydration is a different technical process and may use much lower micron values.

Mistake 9 - Assuming a Leak Eliminates Recovery Requirements

The leak exception still requires isolation where possible and maximum practical recovery under the specific rule.

Mistake 10 - Assuming Non-Major Work Always Uses 0 psig

Only the qualifying § 82.156(a)(1) condition uses that special pathway.

Mistake 11 - Forgetting the Oil-Change Provision

Oil can retain refrigerant.

The current oil-change pressure provision is:

≤5 psig

Mistake 12 - Using System-Dependent Equipment Above 15 lb

System-dependent equipment generally cannot be used on an appliance with a full charge greater than 15 lb unless permanently attached as a pump-out unit.

26. Final Quick Lookup

Table control

• Source: 40 CFR §§ 82.152 and 82.156
• Units: As shown
• Conditions: Rapid exam review; consult earlier sections for full conditions
• Historical warning: Pre-1993 equipment values remain current condition-dependent values.

27. Cross-Reference Guide

References

Current Regulatory Sources

1. Electronic Code of Federal Regulations, 40 CFR § 82.152 - Definitions, accessed August 14, 2026.
   https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-82/subpart-F/section-82.152

2. Electronic Code of Federal Regulations, 40 CFR § 82.156 - Proper Evacuation of Refrigerant from Appliances, accessed August 14, 2026.
   https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-82/subpart-F/section-82.156

3. Electronic Code of Federal Regulations, 40 CFR § 82.158 - Standards for Recovery and/or Recycling Equipment, accessed August 14, 2026.
   https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-82/subpart-F/section-82.158

4. U.S. Environmental Protection Agency, Stationary Refrigeration Service Practice Requirements, accessed August 14, 2026.
   https://www.epa.gov/section608/stationary-refrigeration-service-practice-requirements

5. U.S. Environmental Protection Agency, Required Level of Evacuation of Appliances, last updated August 3, 2026 and accessed August 14, 2026.
   https://www.epa.gov/section608/required-level-evacuation-appliances

6. U.S. Environmental Protection Agency, Refrigerant Recovery and Recycling Equipment Certification, accessed August 14, 2026.
   https://www.epa.gov/section608/refrigerant-recovery-and-recycling-equipment-certification

Course Cross-References

7. 5.9 - Service-Practice Requirements and Exceptions

8. 7.3 - Type I Recovery Requirements

9. 8.8 - Type II Evacuation Requirements

10. 9.9 - Type III Evacuation Requirements

11. 10.2 - High-Priority Numbers and Thresholds

12. 11.2 - Acronyms Symbols Units and Conversions

13. 11.5 - Appliance Type and Certification Decision Guide