Face it, your house is dirty. Unless you live in a clean room and wear a white suit after going through decontamination, your house has dirt in it.Many people like to forget about the maintenance of their furnace because it's usually stuck in the basement and no one ever sees it. It's all automatic, so why bother thinking about it? Frankly, because your house is dirty. You don't like me saying that do you, but think about it. You bring in dirt and dust on your shoes and clothes every time you walk in and out the door. When the door opens and there is wind, it brings in dust from the outside. You can see it when you open your curtains and the sun shines in your room. Those tiny particles floating in the air and sticking to everything...that's dust.Your furnace works on a give-and-take formula (I am talking about forced air furnaces). The furnace sucks in air from inside the ho
