R-421A gets OEM Approval from ComfortStar

On February 21st, ComfortStar announced that Choice R-421A is approved as the only acceptable R22 alternative refrigerant for all ComfortStar MIA/MIH-NCRdry-nitrogen-charged Air Conditioning units. We are very excited that Choice R-421A is the ONLY R-22 direct replacement covered under warranty for residential A/C by any OEM to date. We feel that this is a major step in the evolution and adoption of Choice R-421A as the preferred R22 replacement in the marketplace.

 

ComfortStar mentions the following reasons for approving R421A as the only acceptable R22 alternative refrigerant for use in their equipment-

 

-R421A is an environmentally friendly non ozone depleting replacement for R22

-R421A can replace R22 without modification-

-R421A no hydrocarbons such as butane, and is rated “A1” by ASHRAE

-R421A is non flammable and rated A1 by ASHRAE

-R421A can be used with Mineral, AB, or POE oils*

-R421A is comparable to R22 in terms of performance  and pressures, approximately 1% higher at 95°F

 

For more information on Choice R421A, please visit our website or contact us toll-free at 1-855-GET-421A.

 

*If there is a vertical height difference of 20 feet or more between the evaporator and condensor, the system must be converted to POE.