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"Understanding the basic operation of your oil furnace will help you maintain a comfortable home this winter. It is important to learn how to clean and maintain furnace components. Take this quiz to see how fired up your knowledge of how to repair oil furnaces is."^^<http://www.w3.org/2001/XMLSchema#string>
<http://home.howstuffworks.com/home-improvement/heating-and-cooling/oil-furnace-repair-quiz4.htm>