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Red Squirrel 05-27-2010 07:02 PM

How do bucketless AC units work?
I just ordered this unit:

This one as well as many others say they are "bucketless" or "self evaporating". How exactly does this work? Does the evaporated water go through the exhaust hose I hope? Or just in the air? Since if it just goes in the air, then it would never really dehumidify the room.

Snav 05-27-2010 08:24 PM

It likely works like a self-evaporating refrigerator.

Water from the unit is collected in the bottom of the unit in a large flat pan. Either using air blowing over the top to encourage evaporation (with a fan) or using heat (which most fridges use) the water that's collected is routinely evaporated away.

Since your unit will not run 24/7 - and therefor will not fill the pan 24/7 - the water will evaporate through the entire day even when your unit is not running.

With excessive use, though, the pan can become too full - but modern-units of all types (ac/fridge/etc) have monitors that will balance out the unit running with the evaporation so you won't have routine overflows.
Or - it will notify you if the reclamation pan becomes too full, requiring you to empty it.

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