CHICAGO — Dynatemp Intl. Inc. shared booth space with Choice Refrigerants, and the two companies displayed a new residential split system designed to use R-421A, one of the R-22 alternative refrigerants offered by Dynatemp. R-421A, the only two-component blend to replace R-22, is non-ozone depleting and can be used with mineral, alkylbenzene, or polyolester oil. The new units are available in sizes ranging from 1.5-5 ton.
Will Gresham, executive vice president, Dynatemp, noted that as with most refrigerant distributors, for the past several years, Dynatemp has been focused on the hydrochlorofluorocarbons (HCFC) phaseout and the transition over to hydrofluorocarbons (HFCs) as well as the R-22 alternatives.