Most of us do not know how a furnace works. We do not know how to clean it or to make small changes so that the furnace will work optimally. All that we are concerned is whether the furnace is keeping us warm. Only when it is not warming us properly we think of getting it serviced or repaired. Everyone can keep their furnace functioning optimally by just cleaning the furnace filter or if required by changing it. It can be easily done but you need to know which filter would be ideal for your furnace.
Before we start learning everything about furnace filters, let’s first understand how a furnace works. A furnace sucks in air through the return ducts and the sucked in air is passed over a heat exchanger, once the air is heated the blower blows the hot air through the air vents in the room. It keeps continuing the process till the temperature in the thermostat that you have set is achieved. Continue reading