Perfomed 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. Found ac does not have locking refrigerant caps. These are code for Minnesota and should be applied to unit. Start assist kit is recommended for unit add longevity to outdoor unit. The unit is larger and motor is larger. These motors require allot of power to start and this compnent will assist in its start up. Found air exchanger motor to be completely seized. I would encourage replacement of unit, due to motor assembly cost.