The burning of anthracite coal requires appliances ... they are apt to be troublesome whenthere is too \ great draft. A coal stove or furnace should therefore be so | constructed that its draft ...

If you need to purchase a gas-burning forced-air furnace but aren't sure how they work, here's what you need to know.

For years, every home had a fireplace, or wood-burning stove, to provide some measure of warmth. Large, coal-burning, furnaces were later installed in basements. These depended on warm air rising ...