| so 21 years you went from R-22 to R-410A on the freon.....temperatures readings out on the condenser you should see a 10 rise from the air thru the coil and discharged up and out.on the furnace section 18F drop from the return to the discharge into the hopuse is typical(take filter rack temp and top of unit above A coil)if your short on charge that basically is the tonnage rating compared to a correct charge and cycle on stat setpoint.check those split temps after a 30 minute run on a hot day |