Utility bills are often in the top 5 most expensive budget items for a household. Therefore, we are always looking for ways to decrease them. During the heating and cooling seasons, changing (or cleaning if your furnace requires) the furnace filter on a regular basis will prevent airflow restriction, which means that your furnace has to work less hard. This means that it is more energy efficient resulting in lower utility bills. It also means less wear-and-tear on furnace parts, resulting in fewer service calls and a furnace that lasts longer, both resulting in more money staying in your bank account.
The big question is, “How often should I change the filter?” The answer is, “It depends.” If you own furry pets, you most likely will need to change the filter once a month. If you have a fur-free home you may be able to extend the life of each filter to 3 months.
Other factors that extend the life of your filter:
(1) Keeping your winter thermostat at a lower temperature means less dry air which means less dust in your home.
(2) Keeping a clean (i.e. dust-free) home means cleaner, longer lasting filters. This is especially true if you want to counteract the effect of your furry friends.
The best way to determine when it is time to change the filter is to look at it. I assure you, you will easily be able to see when it is dirty. I make it a point to write the date on the side of the filter just before I put a new one in. That way you will know when you change it how long it lasted. After a few months, you’ll get a feel for how long they last in your home.