No, refrigerants cannot be blended.
r22
No.
ef22a is a refrigerant. It is used in place of R22. It is a Hydrocabon refrigerant. Very efficient.....
what is suction pressure of r407a
R22 is a hydrochlorofluorocarbon (HCFC) refrigerant that is being phased out due to its negative environmental impact. R22a is a hydrocarbon refrigerant blend that is used as an alternative to R22 in some systems, but it is flammable and requires special handling precautions.
One refrigerant that is chlorine free is cfc-22. This refrigerant has gained popularity in the past few years in many homes.
Most new equipment is built for and charged with R410a, a refrigerant with much higher pressures than the R22 used for decades, R22 units are still available, dry charged however, you must fill them with R22 onsite. This is how new R22 compatible equipments being sold still.
R22
No
42
R22
R22 r123