I found this yesterday during a tune up at a retirement village. The is a condo building all the condensors are in an underground parking garage. Outside was 75* in garage 89*. R-22 pressures 64/242# superheat 34* subcool 30*. wetbulb 61* and 22* temp drop across coil.TXV unit and a/c only. Lineset was unknown length. Customer had no complaints other than she knows the unit runs a lot. But keeps up most of the time. Garage did have larger exhaust fans. All the condensors had build up on coils. of course no water lines nearby besides fire sprinklers.
What would you guys recommend?
Only other thing I could think of was a head pressure control to activate the fire sprinklers. But I only told her to continue lawsuit against builders.