This option is the least expensive option that would safely address what we were called out for. *refrigerant recharge Arrived at clients foe two system and water heater maintenance. Set thermostat to cooling. Checked for proper delta T. Inspected blower wheel and air filters. Blower wheel had minimal build up. Replaced both air filters in the return grilles. Flushed condensate drain line and ensured free of dirt and debris. Checked electrical components and inspected evaporator coil. Made my way to downstairs furnace. Set thermostat to cooling. Checked blower wheel which was 40% restricted. Air filter was 25% restricted. Flushed condensate drain line and cleared out with ez trap brush.evaporator coil was good. Washed both outdoor coils. Checked electrical components and system pressures. The lower level system was low on charge. Client approved recharging system to correct specifications. Systems are operational. Job complete.