R-22
If your window unit is low on freon, the unit will not cool sufficiently or blast out warm air. To find out what kind of gas is used in this type of unit, look on the rear panel for a label which should specify what type is required.
They use R410a eco friendly refrigerant gas now.
R134a freon......
It depends on what year the unit was built. Most AC units for your Home used R-22. A new freon 410A is used in the newer systems. There has been a slow switch over from about mid 2005 until now but the EPA has banned AC units from being built with R-22 now so any unit you buy today will have the 410A.
FREON USED IS R-12
134A FREON IS USED.
Would have been built for R12, can be converted to R134a.
Would have been built for R12, can be converted to R134a.
Freon is not used in automobiles any more. Refrigerant is used.
Would have been built for R12, can be converted to R134a.
Would have been built for R12, can be converted to R134a.
Would have been built with R12. Can be retrofitted to R134a.