Arrived on site, customer stated her bills were higher than last year using the AC the same amount. Informed customer that this could be because of the dirty evaporator coil reducing efficiency. Changed and dated air filter. Used no rinse evaporator to clean indoor coil. As well as brush the hair off the underside of the coil. The coil was extremely dirty and struggling to breathe. Blower motor amps were pretty high and it was noticed that the blower wheel was very dirty. The dirt on the blower wheel is causing drag Causing the motor to accumulate more wear and tear indicated by the high start amp. 20° between supply and return as expected. Upon continuing to the outdoor unit, I washed the condenser coil to promote heat exchange and increase unit efficiency. Start and run Amps on the compressor were within range. Run amps on the condenser fan motor were within range. Contactor Was testing within range 16 ohms. Compressor, capacitor, and fan capacitor were both testing within manufactur