It’s particularly difficult for those who rely on a wood stove to escape the feeling that perhaps most of that hard-won heat may be whistling up the chimney rather than keeping them warm.

However, when you assess the real risks of using a galvanized Class A double- or triple-wall stove or chimney ... galvanized pipe at the maximum temperatures produced by a wood-burning stove?

Designed to use biomass that might otherwise be wasted, such as wood ... rocket stove, which sucks air in past the fuel, burns it, and exhausts it up the chimney. A few sections of pipe are ...