AC precision tune up. Clean and tune up AC; cleaned condenser coil, checked all outdoor electrical components, tested indoor air flow, checked refrigerant levels, and tested overall AC operation. Installed Drain pan treatment to prevent biological growth and help keep the drain line clear. Recommended blower wheel cleaning, Surge protector to prevent power surge and damage the electrical components and Start assist kit to provide a boost in power when the ac starts up and help extend the life of the compressor. Appointment set up for next week to install a bigger return duct for better air flow.