Quote:
Originally Posted by sphelps
The basic rule is to never rely on mechanical floats. I believe humidifiers have a drain if the water level gets too high, same as a toilet.
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Most older humidifiers have a float valve and pan to hold water, the only drain is the one on the floor when it overflows. The mechanical float valves on these units last for years without fail. In my previous house the float valve had been working for 11 years and had not spilled a drop. The key to these things is simplicity. In my current humidifier I have an electronic solenoid and it took three of them before I got one that worked properly. I don't know of too many electronic devices, especially ones controlling water, that I would trust for 10+ years.