greenrvgreen wrote:
..the pics seem to show the large AC ceiling unit as the intake and a small, remote ceiling vent as the outflow. Doesn't seem likely to me that one is contaminating the other.
No, I made sure of that. The vents are pointing away from the intake.
A long-time refrigeration tech from the 'other' board said this:
"The 20 degree rule of thumb is just that....a general rule of thumb that we hvac people use as a quick test to check performance of an air conditioner. THERE IS NO RULE STATING THAT THE AIR CANT BE COLDER. we consider a 20 degree drop in air temperature as a good indication that the air conditioner is performing satisfactorily. If it is colder so much the better. Many conditions will affect this test."
