I am thinking about running pipe from under the living room where the wood stove is, to the other end of the house to bring cool air to the air intake of the wood stove. The goal is to create airflow to move warm air through the main level of the house, by pulling cool air from the back room, via the crawl space pipe, to the intake of the wood stove. (hope that's not too confusing)
This would be a passive run, from one floor register to the back of the wood stove, direct.
Is it a big problem to be running the pipe in 4" and 6" diameters sequentially?
Would the run require a duct fan to move the air or would the temperature difference (typically about 10-15 degrees F) be enough?
I'm trying to save money by re-using 25' of 6" pipe, and then connecting it with 4" pipe for the remainder. Above floor to the wood stove will be 3" pipe, about 15" long. The total run in the crawl space is approx 70' long.
Last edited by herennow; 01-16-2011 at 08:58 PM.
Reason: better title