If all the ductwork must be replaced or added inside intact walls, it can cost $2,700-$12,000 or more to install gas central heating with a standard-efficiency gas furnace and $3,500-$22,000 or more with a high-efficiency unit.
I want to make a different-sized blanket! How much wool do I need? In my experience, you get about 600 square inches per pound of wool. Why do I have to felt the wool? I thought superwash wool doesnât felt!
Wool fiber is the natural hair grown on sheep and is composed of protein substance called as keratin. Wool is composed of carbon, hydrogen, nitrogen and this is the only animal fiber, which contains sulfur in addition. By fleece. 2  These fibers are strong, fine and elastic fiber which is relatively short, ranging from 1 to 5 inches (25 â 125 mm). 3  Among the different wool fibers, merino wool has the greatest amount of crimp and has maximum number of scales.