Reducing Humidity
The main bedroom in our house in Portugal, suffers from high humidity in the colder months at night, (corner on N side, lower floor and poor wall insulation). Typically 85% at less than 18C.
My Tado app tells me to wind up the heat, but it doesn't work and surely warmer air holds more humidity?
I have a wall mounted air-conditioner in the room, but if I put that on it cools the room.
I can understand the concept of dehumidifiers in hot humid conditions, but I cant "get my head around" the best way to reduce humidity in cold temperatures.
Would be grateful for any views on the topic.
Answers
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Humidity is relative to temperature. If you warm it up it's relatively less humid. You can also work out absolute humidity. https://planetcalc.com/2167/
I'd also be looking for leaks just in case that is the actual cause of the damp. Guttering, downpipes, leaking plumbing indoors.
For removing humidity you need a de-humidifier running to take the moisture out of the air and put it in a tank to empty away. You can use it in cooler temperatures just as easily.
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Thanks for the response. The problem is not related to guttering etc although I recognise that the wall construction is not the best from a thermal conduction perspective.
Portugal, at least the Algarve, has higher winter humidity than UK and this is what I am dealing with.
I am still not clear if what the Tado app calls for in these circumstances, i.e. wind up the heat, is the best policy, because, whilst this would reduce relative humidity, I cannot see that this would reduce total humidity
Equally, if I switch on the aircon to "Dry" the humidity may be reduced, but the temperature in the room is lowered and that is equally undesirable
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De-humidifier that pulls out the moisture is the only sensible option I would think.
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