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. Blower wheel cleaned. Installed motor booster due to testing out of range. Air Exchanger cleaning and tune up. Remove filters and core to vacuum. Also clean cabinet interior. Inspect bearings on blower assembly. Install core and filters. Clean off outside hoods. Test operation of air exchanger. Recommended Surge protector to prevent power surge and damage the electrical components, locking cap on the outdoor unit to prevent leaks and to meet Minnesota code and Start assist kit to provide a boost in power when the ac starts up and help extend the life of the compressor. Homeowner has denied recommendations at this time.