Evaporative coolers (swamp coolers) have 2 pillow blocks that often get overlooked when de-winterizing the unit. Fill with 2-in-1 oil to ensure smooth operation.
How many filter are in your home? Clean/replace filters in your home as needed. Use This list to get started: EXHAUST FOR STOVE ( MICROWAVE) HEATER UNDER SINK WATER SYSTEM CLOTHES DRYER/FRONT LOAD WAS