Self-contained recovery equipment
Short answer · Updated 2026
Self-contained recovery equipment is recovery or recycling equipment that can remove refrigerant from an appliance without the assistance of components contained in the appliance (40 CFR 82.152). It has its own compressor, so it works even when the appliance compressor is dead. System-dependent equipment relies on the appliance, and it may not be used on appliances with a full charge over 15 pounds unless permanently attached as a pump-out unit.
Self-contained vs system-dependent recovery
| Point | Self-contained | System-dependent |
|---|---|---|
| How it moves refrigerant | Its own compressor or pump | The appliance compressor or system pressure |
| Works with a dead compressor | Yes | Poorly or not at all |
| Appliance size limit | None in the definition | Full charge of 15 lb or less, unless a permanent pump-out unit |
| Typical use | Most service and disposal work | Small appliances, often with a piercing valve |
| Regulation | 40 CFR 82.152 | 40 CFR 82.152 and 82.156(e) |
Self-contained recovery equipment is recovery machinery that has its own means of drawing refrigerant out of an appliance. It carries its own capability to pull and move the charge into a recovery container, and it therefore does not depend on anything the serviced appliance can contribute. Whether the appliance's compressor runs or not, whether the system holds pressure or not, a self-contained machine brings its own muscle to the job. The regulation also limits where the dependent kind may be used: system-dependent equipment may not be used on appliances with a full charge of more than 15 pounds unless it is permanently attached to the appliance as a pump-out unit.
Its counterpart is system-dependent recovery equipment, which has no independent means of moving refrigerant and instead relies on the appliance's own components, chiefly its compressor, or on the pressure the system itself provides. The distinction is the tested concept: one category works alone, the other borrows the appliance's help, and what a given device can honestly accomplish follows directly from which category it belongs to. A system-dependent device facing a dead, pressureless appliance has nothing to work with.
The distinction connects to the rest of the recovery framework in a satisfying way. Recovery standards acknowledge that a dead compressor makes complete capture harder, and the equipment categories acknowledge that some devices depend on that compressor entirely. Exam questions built on this term nearly always reduce to matching the definition: independent means of removal points to self-contained, reliance on the appliance points to system-dependent.
Common questions
When using a self-contained recovery device, what matters most on the exam?
That it brings its own means of removal. A self-contained machine does not need the appliance compressor to run, so it is the right answer for a system with a failed compressor or no pressure. If a question describes equipment that relies on the appliance compressor or system pressure, the answer is system-dependent.
Can system-dependent recovery be used on large systems?
Not on appliances with a full charge of more than 15 pounds of refrigerant, unless the system-dependent equipment is permanently attached to the appliance as a pump-out unit (40 CFR 82.156(e)). Above that size, use certified self-contained recovery equipment.
Does self-contained recovery equipment have to be certified?
Yes. Recovery and recycling equipment used for service or disposal must be certified by an EPA-approved equipment testing organization under 40 CFR 82.158. For small appliances that means being able to recover 90 percent of the refrigerant with the test stand compressor running and 80 percent with it not running.
Sources
- 40 CFR 82.152, definitions of self-contained and system-dependent recovery equipment.
- 40 CFR 82.156(e), the 15 pound limit on system-dependent equipment.
- 40 CFR 82.158(e), certification standard for small appliance recovery equipment.
Related terms
| Recovery | Removing refrigerant from an appliance and storing it in an external container, without necessarily processing it. |
| Small appliance | A factory sealed product containing 5 pounds or less of refrigerant, the equipment class covered by Type I certification. |
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