Treat it as A2L
Control ignition sources, ventilate the work area and use tools approved for lower-flammability refrigerants.

LOWER-GWP HVAC • A2L
R454B is a lower-global-warming-potential refrigerant developed for new air-conditioning and heat-pump platforms engineered around A2L requirements. This 22 lb cylinder gives qualified professionals a practical service quantity for compatible residential and light-commercial equipment.
Clear identification matters. Compare these details with the equipment nameplate, service documentation and cylinder label before connecting service tools.
| Refrigerant designation | R454B |
|---|---|
| Refrigerant family | HFC / HFO blend |
| Blend composition by weight | R32 / R1234yf — 68.9% / 31.1% |
| Net refrigerant weight | 22 lb / 10 kg |
| Safety classification | A2L — lower flammability |
| Typical equipment | Compatible residential A/C, heat pumps, light-commercial systems and approved direct-expansion equipment |
| Cylinder format | Sealed steel cylinder |
| Intended user | Qualified HVAC/R professionals |
Control ignition sources, ventilate the work area and use tools approved for lower-flammability refrigerants.
Follow the equipment procedure and remove blended refrigerant from the cylinder in the liquid phase unless the manufacturer states otherwise.
Repair leaks, pressure-test with an approved inert gas, evacuate correctly and weigh in the specified charge.
Use only in equipment specifically designed and labeled for R454B. It is not a universal top-off or automatic drop-in replacement for R410A, R32, R22 or any other refrigerant. Never mix refrigerants.
Bulk refrigerant sales in the United States are restricted. Proof of the applicable Section 608 or Section 609 technician certification—or documentation that the purchaser employs a properly certified technician—may be required before fulfillment. The purchaser is responsible for satisfying federal, state and local rules for purchase, transport, storage and use.
Keep the cylinder upright, secured and in a cool, dry, ventilated location away from heat, flames, sparks and direct sun. Read the cylinder label and current safety data sheet before handling. Refrigerant can displace oxygen, cause cold burns and create dangerous pressure if mishandled. Never intentionally vent refrigerant.