Don't do it unless you are certified , plus buying R22 you need a certification. Check your evaporator filters , wash your condenser coil.
to evaporate the refrigerant
If it works properly, never.
No. If you need to replace it you pay for it.
If is a 2 stage air conditioning unit. You might want to replace the furnace.
$6000.00
ewan
Many home AC units are sealed, and there is no way for a homeowner to add refrigerant.
Many home AC units are sealed, and there is no way for a homeowner to add refrigerant.
1 tonn used in air conditioning means 1 ton refrigerant used in air conditioning, so 1 ton refrigerant is same 12000 BTU
53189
My 13 SEER heatpump cost 4800 for a 1300 square foot home.
It needs to be a minimum of 55F but it does depend on the type of refrigerant you have. Most technicians prefer it to be at least 60F.