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Show Coal vs. Gas Is Discussed by Heating Firm Man "Coal heat is warmer than gas heat." How often have you heard that statement? We, at Gunther's, are often called- upon to explain this phenomenon!. In the following sense, the statement state-ment is true. In a coal furnace, when it is in operation, there is always a bed of hot coals. This fuel bed keeps the furnace continually contin-ually waini. so that there is a small amount of heat circulating throughout the house, even when the thermostat may not be calling for heat. This keeps the house comfortable, because the air is continually con-tinually in motion, and there are no warm and cold spots, as a consequence of no circulation. With a gas furnace, the burner is either off or on. When it is on, the furnace is warm, the air is circulating, cir-culating, and the home is comfortable. comfor-table. When the burner turns off, the furnace cools very rapidly, the circulation of air is stopped, allowing al-lowing the warm air then to rise to the ceiling, and the cold air to fall to, the floor. We call this "air stratification." The house then feels uncomfortable until the cool air builds up upon the floor to the height of the thermostat on the wall, and actuates it to turn on the burner again. This is the cause of the statement, "coal heat is warmer than gas." But today we are able to do something to correct this weakness weak-ness of automatic fuels. We have a control system that turns on the gas burner at frequent intervals, modulating the heat so to speak, which keeps the furnace continually continu-ally warm, just as the coal furnace, fur-nace, but with much greater accuracy ac-curacy of control. The -warm air is then circulated continually with just the right temperature, neither too much or too little, to keep teh house comfortable. This control system should be a part of every new year-around air conditioning system. It can also be added to any present gas or oil central furnace. Orville G-unther |