Old-Biscuit wrote:
The 20 degree difference is between the A/C Unit Return air temp and the A/C Unit discharge air temp....basically the amount of temp drop across the Evap Coil
We've had this discussion a few times and this statement always comes up.
MY experience is that my output air is a constant 55 or so degrees. The best my coach can do with that is to stay 20F below ambient.
If the discharge air were only 20F below ambient it would take a very long time to cool the coach. But, this 'fact' has even been said by people claiming to be HVAC techs, which in my case, is just not true. I've even stuck thermometers in there only to be told they were incorrect. So, according to them, my a/c is either 'defective' or magic.