Whats my dehumidifier Wattage?

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dizzyground

Well-Known Member
I've got portable AC unit Point poac8009. It is 1000w on AC, but am wondering if the dehumidifier uses less energy? Couldn't find this info anywhere, hope someone can help me. Might have to buy a electricity meter..
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dizzyground

Well-Known Member
lusidghost said:
Buy one of these. You'll end up walking around your house checking everything with a plug. I used mine not too long ago to manually dim a LED. They are great.
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Might be the only way to find out :D

Rurumo said:
Dehumidifiers use a lot of power, and they vary a lot unit to unit. 50 pint units use around 500 watts, the 22-35 pint ones use 300-450ish watts.
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Yeh.. This is why im looking for. If it uses 1kw I want to find some other way to solve humidity issue.
 
Bukvičák

Bukvičák

Well-Known Member
ttystikk said:
Dehumidification is done by adding heat. If you're removing moisture, you have to cool the air below dewpoint AND then warm it back up. Some units are better at this than others.
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Nope! Dehumidification is done by removing water from the air. Otherwise it is not dehumidification but lowering your Rh by rising the temp. It goes through evaporator coil where the water condense and than it go through condenser coil where the air is heated up.
 
Bukvičák

Bukvičák

Well-Known Member
dizzyground said:
Tag on the back say 1kw, but that is for the AC mode that it was mainly made for. But it has a dehumidify mode that makes alot less noise and heat :D So maybe less power too.
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Lot less noise comes from lover speed of fan not from lower power draw
 
UpstateRecGrower

UpstateRecGrower

Well-Known Member
Bukvičák said:
Nope! Dehumidification is done by removing water from the air. Otherwise it is not dehumidification but lowering your Rh by rising the temp. It goes through evaporator coil where the water condense and than it go through condenser coil where the air is heated up.
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He’s talking about the cold side and hot side of the dehumidifier not temp changes in the room itself.
 
Bukvičák

Bukvičák

Well-Known Member
dizzyground said:
Thanks, that makes sense.
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If it also has auto mode, try to find out which values are preset at this mode. It is ussually 22celsius and 50% RH but it may be different from unit to unit. Since it is not supposed to be dehumidifer, you can not set the desirable RH, so it will be sucking the moisture from the air untill you will turn it off manually. Auto mode gives you some chance to keep it stable. If there is no auto mode you have to be carefull with leaving if dehumidify for longer time because the temperature might go crazy high.
 
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dizzyground

Well-Known Member
Bukvičák said:
If it also has auto mode, try to find out which values are preset at this mode. It is ussually 22celsius and 50% RH but it may be different from unit to unit. Since it is not supposed to be dehumidifer, you can not set the desirable RH, so it will be sucking the moisture from the air untill you will turn it off manually. Auto mode gives you some chance to keep it stable. If there is no auto mode you have to be carefull with leaving if dehumidify for longer time because the temperature might go crazy high.
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Actually I think the RH was adjustable, lowest setting was 35%. But my fuse might not be able to handle 1kw peaks.. Would have to run the electricity via another fuse and long cord
 
ttystikk

ttystikk

Well-Known Member
Bukvičák said:
Nope! Dehumidification is done by removing water from the air. Otherwise it is not dehumidification but lowering your Rh by rising the temp. It goes through evaporator coil where the water condense and than it go through condenser coil where the air is heated up.
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Wrong. Any meteorologist will tell you that to dehumidify, you must add heat. This is as basic as gravity.
 
ttystikk

ttystikk

Well-Known Member
dizzyground said:
Actually I think the RH was adjustable, lowest setting was 35%. But my fuse might not be able to handle 1kw peaks.. Would have to run the electricity via another fuse and long cord
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Long cords are really tough on compressors due to voltage loss. This effect is worse at lower voltage, like 120V.
 
ttystikk

ttystikk

Well-Known Member
UpstateRecGrower said:
He’s talking about the cold side and hot side of the dehumidifier not temp changes in the room itself.
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Correct; I'm talking about the basic process itself.

A dehumidifier works by cooling the air down past its dew point so it releases moisture... But that means RH is 100%! In order to actually dehumidify the space, the unit must then WARM THE AIR back up, which requires heat. This is usually done by passing the cold air exiting the evaporator section through the unit's compressor section, that's the hot side.
 
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