Depends on the unit. Look at the rating plate on the unit. Typical range is 6 to 12 amps.
1000 watts = 1 KW, so: 820 watts = 0.82 KW 0.82 KW * 24 hours = 19.68 KWH
The EnergyStar site, reliable on these matters, points to an interactive calculator on myenergystar site. This estimates the real power consumption based on room size and its humidity (you must give a subjective evaluation). Another choice in the form, for determining power consumption, is to measure how much water is condensed inside every day. This works if you already have the dehumidifier running, The interactive dehumidifier power calculator is at http://www.myenergystar.com/ProductsAndDiscounts.aspx?type=dehumidifier&menu=calculator Guido (tguido56)
45 watts
Hoovers use 1000 - 2000 watts
A humidifier makes the air fresher, While a dehumidifier removes a fresh smell. A house would use a a humidifier and a museum would use a dehumidifier
Abut 20 watts.
189 watts
25 watts.
650 watts
About 10 watts
it may use 15 to 25 watts
Usually about 1200 to 1500 watts.