This filter does a great job of keeping my bedroom air clean and removes the allergens that are bothersome to me. With no pets or smokers in our home, one of these filters usually lasts for 10 to 12 months.
We have 2 boxer dogs and I run my purifier for about 5-6 hours a day. I have been able to use the same filter for the 7 months before needing a new one. I love the ease of changing these filter out. They are thick and really hold a lot of impurities. I will never use another filter for my air purifier.
Upfront the cost for the filters can seem high, however they are great quality and last a long time depending on how much debris is in the air. The GermGuardian will notify you when it's time to change the filter and I find I get approx. 6 months out of each filter. Also, the more you use the purifier the, the less dusty the room will be which will extend the life of the filter.