If my attic temperature is around 115 to 120F, indoor temp near the return is 80F, indoor humidity is 44%, then under these conditions, what should the temperature of the indoor coil be at?
With this condition, my tech measured coil temp is at around 52F. However, the air temperature at the plenum is found to be at 66F, therefore only a split temp of 14F.
My unit is a 3-ton SEER-13 Goodman split system, am i seeing the best of what this unit can do, or perhaps i can still lower the air temp coming out of the plenum?
Oh by the way, it seems like even if I run my unit for a long period of time, my indoor humidity always stays at 43 to 45%. Is this normal? I would think the A/C should decrease the humidity over time. Outdoor humidity is only at 22 to 28%.