Filters

Furnaces need filters in order to operate properly. One of the main purposes of furnace filters is to ensure that the blower fan in the furnace isn't processing unneeded dirt, dust and debris. It is best to keep the blower fan in excellent shape so that it blows warm air through your home. Filters come in several different sizes. Some furnaces prefer certain filter brands, and you may find that some filter brands work better at picking up dust and dirt than others. There are even a few brands of filters on store shelves that are marketed to reduce allergens. Yes, those filters can be more expensive, but if you or your family members have allergies, they may be worth the extra expense.    It is very important to change your filter at least every year. If you have a furnace that has a thinner than an average filter, you may need to replace it every three months. You can even look at the filter to see how dirty it has gotten. If you're wondering what size and/or brand of filter to purchase, take the old filter out and look at it. The size of the filter should be printed on the side, and the brand name will likely be there as well. Technicians, like Classic Home Services, will also sometimes place a sticker on the furnace, telling you what size and brand of filters to purchase.