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. Added a whole system surge protector to the furnace and a blower motor surge protector. Also added drain pan treatment to the indoor coil. Removed and replaced the motor booster for an upgraded version, added locking caps to the outdoor unit. Also added vent protection to the furnace exhaust vent, this will help keep unwanted critters from entering the exhaust system.