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I've not measured that.
Assume it's similar to outside as there is plenty of unintended ventilation. How do the dehumidifiers make it warmer? Or does it just feel warmer?
ChasnotRobert-
How do the dehumidifiers make it warmer?
They're basically compressors, condensers and heat exchangers. Loads of power in has to go out somewhere.
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I thought the theory was that it takes more energy ( your heating system ) to heat up a damp room.
Yes it is noticeably warmer which not surprisingly feels warmer. -
Dehumids reduce the surface area of everything
The desiccant ones - a bit more spendy - actually spit out hot air too.
NotThamesWater
not4sale
Howard
What is the indoor humidity level ?
I have 2 dehumidifiers that go on when the humidity goes over 60 and they have made a noticeable difference to the temperature.
I remember using that clingfilm stuff in the 80's - its a one off disposable solution because it had to be ripped off* for the spring and summer in order to open the windows.