Can Water Damage Outside AC Unit

by Consumer

So the wife and I have noticed that our central air conditioner unit has been a little louder than normal. We called for a technician to come out but they never came. Today I saw my mother in law (who is mentally ill btw)with a hose trying to clean the outside unit.

She had it on it for about 5-10 minutes. I know they are meant to drain some water IE rain,ice or snow. But can someone actually spraying a water hose do damage to a unit?