A:AnswerIt could be used in a crawl space and does not need clearance on top to function.
BUT the units controls are all on top
Including the light which comes on to let you know the back of units filter needs to be cleaned.
ALSO you need room in front to empty tray OR if you use hose to auto drain that hook up is in BACK of unit and needs to be run down lower then unit for proper drainage.
A:AnswerThe 50 pint unit consumes 545 watts at 115 volts/60 hz. Power rates are different is all parts of the US. I would contact your power provider and ask them based on 545 watts consumption
