Performed one system heat pump maintenance. Indoor is a carrier 15kw ECM horizontal air handler. All three heat strip working. Blower motor is not over amping. Wiring in good condition. Coil is rusted and has smaller refrigerant leaks hiding behind rust. Leak detector did signal refrigerant leaks. Outdoor unit has an ok charge so it hasn’t leaked out much of its refrigerant. Compressor is operating, condenser fan is operating. Capacitor is getting weak. Homeowner would like to revisit repairs in spring time. No estimates requested today.