Cedar Creek Air conditioning service Upon my arrival I performed a 6 month checkup on 1 heat pump system. Flushed and treated the water removal system, washed the condenser coil using water, cleaned and treated the electrical cabinet then verified system safety and performance. I found that the voltage enhancement system is outside manufacture specifications and the indoor system is not equipped with power protection. I spoke with the customer about my concerns and advised on the voltage enhancement system needing replacement. Customer did not wish to view options at this time.