Club service on central air conditioner. Recommended filter gets changed soon. Getting a 17 degree delta t. Evaporator and blower wheel are clean electrical connections are tight. Cleaned ez trap out and tested and flushed drain with a gallon of water mixed with cleaner. Wiped down outdoor unit. Condenser coil is clean. Voltage enhancement system read within factory spec of 45/5 uf.. checked for rubs outs operation is normal at this tme