One of the crucial things in furnace maintenance is changing the air filters. If you haven’t done so in a long while, you might want to check it now. Most of the time, when a furnace is on, any slight changes in its overall performance are easily noticeable.
These changes can result in less comfortable air or lower performance output due to a defective filter. Since it is crucial to the comfort of your home, you should change your furnace air filter should at least after a month or two. Here’s why!