Modern furnaces are complex appliances made of many different parts. All of these parts must work together for your furnace to work as it should. One part that can be overlooked is the air filter.
A dirty air filter might not seem like a big deal, but running your furnace with a dirty filter could cause serious damage and create the need for costly furnace repairs.
Poor Heating Performance
One of the most common reasons homeowners contact a furnace repair professional is a change in the heating performance of their furnace.