My mother-in-law is old and can't really maintain much. She has a Swamp cooler and the only issue was when the motor went bad. She climbed the roof, pulled the motor, and bought a new one. I installed the new one with a new belt and it was more simple than doing an oil change. If she can have a trouble free Swamp cooler than anyone can. My neighbor gave me a Swamp cooler so I'll be installing it soon.