Preformed cooling maintenance. Upon arrival we checked all electrical equipment. System is a communicating system. Capacitor tested within manufacturer specifications along with the start and run amps for the compressor and run amps for the out door fan motor. Clients husband had notified us that when the unit is shutting off he could feel warm/hot air coming from one of the supplies in the living room. Upon inspection in the attic the supply had no insulation around it, we moved insulation back around the supply duct to help with the issue. Clients husband had provided a replacement filter. Spoke to the client about surge protection for the unit. System is cooling upon departure.