Why the Motor Type Matters
Standard recovery machines use brush-type motors. Brush-type motors create small internal sparks as the brushes make contact with the commutator — that's normal operation for a brush motor. On R-410A (A1 — non-flammable), those sparks are irrelevant.
On an A2L system, you're working with a mildly flammable refrigerant. During the recovery process, refrigerant vapor passes through and around the machine. An internal spark in a refrigerant-rich environment is exactly the scenario the flammability classification is designed to address.
The risk scenario: Brush-type motor sparking internally during recovery, with high refrigerant concentration in the machine. This is why A2L-rated recovery machines use brushless or spark-proof motors — they eliminate the internal ignition source.
The fix is straightforward: verify your recovery machine has a brushless or spark-proof motor and is explicitly A2L rated. This is a one-time check per machine.
How to Check Your Machine
- Go to the manufacturer's website and pull up the spec sheet for your specific model number.
- Search for "A2L", "spark-proof", "brushless motor", or "flammable refrigerant" in the specs.
- If none of those terms appear — assume it's not rated for A2L.
- Some manufacturers have published separate A2L compliance statements by model. Check support pages if the spec sheet is unclear.
Year as a rough guide: Most recovery machines manufactured in the last 5–7 years that are still in current product lines have been updated for A2L. Older machines or discontinued models are less likely to be rated. Use the model year as a starting point, then verify.
Confirmed A2L-Rated Machines
| Machine | A2L Status | Notes |
|---|---|---|
| Appion G5 Twin | A2L Rated | Explicitly rated. Current product line. |
| Fieldpiece MR45 | A2L Rated | Rated for A2L refrigerants |
| Appion G1 Single | A2L Rated | Check current spec sheet for model year |
| Yellow Jacket SuperEvac | Verify model | Check model and year against current spec sheet |
| Robinair 34788NI | Verify model | Newer models in this line have been updated — verify |
| Older brush-motor machines (4+ years old) | Not Rated | Retire from A2L jobs. Still fine for R-410A and R-22 work. |
This list changes as manufacturers update product lines. Always verify against the current manufacturer spec sheet.
What to Do If Yours Isn't Rated
Your existing machine doesn't have to be thrown away — it still works perfectly fine on R-410A and R-22 systems. You have two options:
- Keep the non-rated machine for R-410A/R-22 work and add an A2L-rated machine for new equipment calls. Label them clearly — don't grab the wrong one in a rush.
- Replace with an A2L-rated machine if you're doing significant volume of new equipment work and want to simplify your kit.
Practical note: Label your non-rated machine with a piece of tape: "R-410A/R-22 ONLY — not A2L." Simple and prevents a mistake on a busy day when you're grabbing gear from the truck.
A2L Recovery Procedure
- Confirm your recovery machine is A2L rated before connecting.
- Recover ALL refrigerant — verify 0 PSIG before any heat work.
- Use an A2L-rated leak detector to confirm the system is clear after recovery before brazing.
- Nitrogen purge before brazing — prevents oxidation and eliminates any residual refrigerant vapor near the work area.
- Recover into properly labeled DOT-approved cylinders. Don't mix recovered refrigerant from different systems if you're uncertain of composition.
- Log refrigerant amounts per EPA 608 requirements. Same rules as R-410A.
R-454B is a blend (R-32 + R-1234yf). Significant leak on a system? Don't recover partial and top off. The blend composition will have changed. Recover all and recharge by weight.
Full A2L Tool Compatibility in Fieldmode
Recovery machines, gauges, leak detectors, vacuum pumps, refrigerant identifiers — complete tool reference with A2L status. Free app, works offline.
Open Fieldmode → Tool Guide