I would like to use RMHs in small insulated buildings, roughly 8'x16' and 16'x24'. The dvds and E&E's book don't say much (at least that I've found) on smaller spaces. Would it be better to drop down to a 5" dia duct or just shorten 6" ducting or am I overlooking something? My goal is to get the mass to where it will keep the place warm for at least 18 hours, before melting the occupant with the heat off the barrel. Any thoughts or suggestions will be appreciated! Thanks!
