The Puritii Air Purification System (APS) will alert you via a light on the control panel and a soft beeping alarm when it is time to check the filters inside. This will happen about every 3 months. However, just because the light and alarm turn on does not necessarily mean that it is time to order a replacement filter. When your filters need to be replaced depends on how you use the device and how poor the air quality is in your area.
Take the time to inspect both the pre-filter and the main filter for visible signs of pollution accumulation. The pre-filter can be rinsed or vacuumed clean and re-used. If the main filter is dirty, it can be disposed with your regular trash. At the least, we recommend replacing the main filter every 6-12 months. Even though you can't see it, the VOC removal stage can become saturated, after which the filter will be less effective at removing these pollutants. The good news is that if you purchased the Lifetime Warranty, ARIIX will send you a free replacement filter every year for the next 7 years!