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Would something like a calor gas heater help in this case then? Rather than a dehumidifier?
I think that's what he may have meant. TBH, I'd rather just leave the windows open and get fresh air. I had calor gas heating once and it kept giving me a headache. Also with the dehumid. you have to leave the windows closed, but that means that Mutley (the kitten) can't go out because I'm waiting for a catflap, but don't have it yet. Arrrrrggggghhhhh.