Is it time to change my air filter?
How often you should change your air filters depends on the model of air filter, building size, and levels of air pollution and construction around your facility. A rule of thumb for changing basic 1” to 3” inch-filters is typically every 30 to 90 days. If your building is filled with occupants who suffer from asthma and allergies, it is advisable to change your air filter every six weeks for optimal IAQ. Ultimately, the time to change your air filter varies based on building or facility conditions.
How Can I Tell if My Air Filter Needs Changing?
There are several ways to tell if your air filter needs changing. One of the most telltale signs is when your filter is noticeably black or gray in color and you can see build-up on the media. Other signs include noticing that your facility is dustier than usual, your HVAC system is cycling longer than usual, or you know that your filter has been in use beyond the recommended change period.
What Happens If I Don’t Change My Air Filter Regularly?
Failure to change your air filter(s) means that your indoor air quality will be poor. Clogged filters can cause your system to use more energy, costing you more in utility costs, and failing to improve your indoor air quality. It can also lead to airflow restriction, which can negatively affect the comfort of your occupants.