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. Outdoor unit no longer meet mn code of locking refrigerant caps. Air distribution system is dirty reducing airflow and efficiency. Refrigerant line pipe insulation are worn down from outdoor elements. Due to age and condition, replacement is recommended. Will have Wes follow up tomorrow afternoon with replacement pricing.