R-32

difluoromethane

Approved

GWP: 675
ODP: 0
Class: A2L
Family: HFC
Boiling: -51.7 °C

Composition: single-component HFC

Volumetrically more efficient than R-410A, so a smaller charge delivers the same capacity. Class A2L — flammable, with specific installation and ventilation requirements.

What this means for you

This refrigerant is approved for use and is not subject to a shrinking quota. It is a safer long-term choice when buying new equipment.

Transitional option. Flammable — requires A2L conditions.

Handling

Class A2L. Low toxicity, mildly flammable. Requires equipment designed for flammable refrigerants, ventilation and detection.

Used as a replacement for

R-410A

HFC blend

GWP 2,088

Split air conditioners and heat pumps

R-407C

HFC blend

GWP 1,774

Split air conditioners

R-22

HCFC-22

GWP 1,810

Split air conditioning — when replacing equipment

Where to go next

What the law requires Find a licensed technician

Data source: Manual §1.3.2, §2.5.1, §2.5.2