Choice - Model R-421A -Refrigerant for Air Conditioning

• No unit oil change required, unlike other R-22 alternatives.
• With no measurable pressure difference to R-22, retrofitting with R-421A is simple and familiar.
• A blend of only 2 refrigerants, R-421A exhibits consistent box temperatures
• With millions of units successfully retrofitted, R-421A is The Easy Choice for contractors.

Note: Technician certification required to complete purchase

Designed to Perform

We designed R-421A to have a nearly identical pressure-temperature (PT) relationship as R-22. This is a key factor in retrofitting air-conditioners and heat pumps without significant deviations in general operation and TXV metering. With R-421A, there is no unit modification needed -saving you time and money.

Consistent Temperatures

Many R-22 alternatives on the market have 3, 4 and even 5 separate refrigerant components that comprise the blend. Each of these components have a unique PT curves that can vary from one another widely. This is known as temperature glide, and glide is a big problem. Glide causes inconsistent evaporator temperatures, resulting in performance degradation .

This is why we designed R-421A to have only 2 refrigerant components and the lowest temperature glide of the leading R-22 alternatives.

Compressor Friendly

We’ve packaged R-421A with a proprietary lubricant, designed to facilitate oil return to the compressor.

• The closest Pressure-Tempature match to R-22
• No Unit Modification
• Does not contain Flammable Components