My new abode has warm air heating. I can't afford to put in "proper" central heating just now, so I'm stuck with it. Poking around it seems that some of the ducting has gone AWOL, resulting in no heating in the kitchen nor in the bike store second bedroom. I'm about to go off on a google search, but has anyone here got any pointers as to what should be where and why there are so many ducts in the loft going to the ridge? (Suspicions are that I've got my exhaust (?) vents and those for the flat below)