How Often to Replace Air Purifier Filters

Air purifiers are great at trapping the dust, pollen and pet hair floating around your home, but what happens to all of these tiny particles? Once these particles are trapped in your air purifier, they are stored in the filter. Over time these particles build up and decrease the efficiency of the air purifier. 

That's why it is important to regularly change your air purifier filters. 

Type of Filter

The lifespan of your filters will vary depending on the type of filter you have. Permanent filters don't need to be replaced, but you'll still want to clean them periodically to remove any particles that have built up. 

Air purifier filters can use several technologies to trap allergens in your home. Some use carbon to attract small particles and eliminate household odors, while others use True HEPA to trap the tiniest particles. Although it depends on the specific filter you have, as a rule of thumb, replaceable HEPA filters should be replaced every 6-12 months, depending on air quality and environmental factors. Carbon pre-filters should be replaced every 3 months, depending on air quality and environmental factors. 

Filter Replacement

While this is a good rule of thumb to follow, we realize changing your air purifier filter is probably not at the top of your to-do list. That's why all Hunter air purifiers have a filter replacement indicator built in to the control panel to let you know when the filters are dirty. And if that isn't enough of a reminder, sign up for a filter subscription and have replacement filters delivered to your front door so you never have to remember on your own again. 

 Shop all subscription products here.