Keeping a warm basement in the winter in Canada is not so easy. The only supply air is a lone ceiling register in the rec room. There is no return air.
I want to add a return air and a supply air to help give some comfort. I've been told that it is futile to try supply air at floor level because it is very difficult to drive hot air down from the plenum and that is why you find the supply air in the ceiling in all basements.
Is that true?