Good on all air conditioning brands.

n Install gauge and check operating pressure
n Check voltage and amperage on all motors with meter
n Check air temperature drop across evaporator
n Check for adequate refrigerant charge

n Check evaporator superheat
n Lubricate all moving parts|Check filters
n Check all wiring and connectors
n Check and adjust thermostat
n Check that condensation drain is open
n Turn exposed damper cooling position, if marked (no balancing)