Why do I need to change my furnace filter?

The filter in your furnace is an important piece of your HVAC system. It serves as a barrier, removing dust and allergens from being circulated throughout the air in your home. Indoor air health problems are an issue in 8 out 10 homes, and indoor air can be up to 100 times more polluted than outside air, according to studies by the U.S. Environmental Protection Agency.

A dirty filter allows for dust, dirt, pet dander and mold to continue circulating through your home. As a result, your family’s health may suffer, especially those who are prone to allergies and asthma. A clean filter will also reduce the amount of dust in your home.

Filters also don’t just improve the quality of air; they also protect your HVAC system from damage. A dirty filter makes your system work harder to move warm air efficiently throughout your home. Dirt can also accumulate on coils resulting in further restricting airflow. When your system has to work harder, parts may wear out quicker and need to be replaced sooner. The life of a HVAC system can also be reduced as well requiring more energy to operate, thus increasing your heating costs. Replacing a dirty filter can lower your furnace’s energy need by as much as 15 percent.

We recommend replacing your filter monthly to keep your system running efficiently, but there are a few telltale signs that your filter should be replaced.
– If you start noticing more dust in your home or dust build-up around your air vents
– You smell a dusty odor in your home
– You or your family has unexplained congestion

In addition to replacing your filter monthly, we also recommend having your system serviced annually. Annual service keeps your HVAC system operating at optimal levels and helps to avoid costly repairs or a no-heat situation.