The Craftsman humidifier I'd installed on the air handler of our home's heat pump HVAC system started dripping water. I assumed that the float valve which controls the water level in the plastic tray which wets the motor driven rotating sponge drum had gotten leaky and wasn't shutting off properly.
Much to my surprise, the float valve was fine, but the bottom of that tray was "rotting through", and with a slight push my fingertip went right through it.
The tray is molded from a hard gray plastic and the bottom which rotted is about 3/32" thick. The rest of the tray is still hard as a rock.
The water in it was a dirty brown color and there was a fair amount of brown "mud" in there too.
Might be my fault for not taking it apart and cleaning it more often, but I'm still amazed that the plastic gave out that way.
BTW, I installed that humidifier about 23 years ago, so I'm not complaining about "short life", just surprised to see "rotting" of plastic. I hope some of the plumbing pipes in our home don't suffer the same fate.(G)
Jeff