Arrived to do a performance maintenance. Started in the garage with the mini split system. Set system for cooling. Measured a temperature split between air entering the unit and air leaving the unit. Rinsed the condenser coil for the mini split. Moved over to the main system. Measured the systems static pressure and measured a temperature split between return and supply air. Checked interior of the air handler for cleanliness. Found that the blower wheel is collecting dust. Went outside and verified refrigerant levels. Verified operation of all electronic and mechanical components. Rinsed coil free of debris. Spoke with homeowner about the system. Air conditioning system is operational at this time.