Hi Guys - I want to check out my basic physics here.  I live in house with porous solid brick walls.  In the past I have taken the view that if I keep the house heated in winter (oil boiler) and ventilated then the ingress of moisture will evaporate and I am in eqiulibirum.  I tried a dehumidifier last winter and it seems to me that this works better for empty rooms, that I don't need warm.  It keeps the room dry and by extracting the latent heat of vapourisation from the humidity it is providing "free" heat.


Have I got this right or is it wishfull thinking?


Stephen