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The amount of kindling wood re-luired depends much upon the size of the coal. A common mistake is to use too large sized coal. A good rule, where stoves or furnaces have a good draft, is to use ...
furnaces could only use charcoal to produce iron. However, wood (which is what charcoal is made from) was becoming more expensive, as forests were being cleared for farmland and timber. Coal was a ...
Although some furnaces generate heat through electricity, or by burning wood, coal or oil, they most commonly burn natural gas or liquid propane gas (LPG). If you own a gas-burning forced-air ...