Air filters are one of a home’s first lines of defense against outdoor pollutants.
Dust, pollen, mold spores, and other particulates get caught before they can find their way into your home, your breathing space, and your lungs. While air filters generally don’t require a whole lot of maintenance, there are a few things homeowners should know when it comes to keeping their homes’ air clean.
When to Replace an Air Filter
There isn’t a strict rule of thumb when it comes to deciding when to change air filters. In general, it’s best to follow manufacturers’ guidelines when it comes to filter lifespans– some filters may need to be changed every six months, while others may need replacing as much as every four weeks.
A home’s geographic location can influence how often filters need replacing, too. Areas with a lot of airborne dust, such as Arizona or New Mexico, will use up filters much more quickly than areas with fewer airborne particulates. In the desert, it’s reasonable to expect to have to change air filters every 1 – 3 months.
Types of Air Filters
A filter’s lifespan is also influenced by what type of filter it is. Disposable filters generally aren’t expected to last long, and shouldn’t be re-used. High-quality allergy rated filters may need changing more often. Washable permanent air filters may only need to be replaced if they become damaged, but will need regular cleaning according to the manufacturer’s guidelines to stay in good working order.
What Makes Good Filters Go Bad
Though it’s usually best to follow the manufacturer’s recommendations for air filter maintenance, there are several factors that can dirty filters more quickly. Pet owners may find that shedding animal hair and dander clogs their filters prematurely, requiring more frequent maintenance. Homes in dusty areas may go through filters quickly, too. Heavily wooded areas can clog filters with pollen in spring and autumn. Lastly, seasonal allergy sufferers often find that they need to change or clean their air filters based on their allergy symptoms, as a flare-up may mean that a filter is past its prime.
HVAC Health
Dirty air filters aren’t just unpleasant to live with, they can create expensive problems down the line. The number one reason for HVAC system failure is due to a clogged air filter. Fortunately, a little regular maintenance and regular air filter changes go a long way to keeping you, your family, and your HVAC system healthy.