About the Allen T500 Filters the air twice per hour in a room up to 500 SqFt. 6-9 Month filter life when running 24/7. HEPA Filter captures dust, dander, allergens, mold, bacteria Patented Odor Powder layer neutralizes bad odors at the molecular level. Ionizer emits negative ions which freshen the air and boost filtration (can be turned on or off) Timer Certified Energy Efficient by Energy Star California Air Resources Board (CARB) Certified Ozone Safe Forever 3 Reasons Why You’ll Love The Allen T500. Reason #1 – Pure air is all we do. For over 15 years, we’ve designed premium air purifiers for bedrooms, living rooms, and your whole house! With Allen, you get quality, reliability, and peace of mind. Reason #2 – Our Forever We have the only Lifetime in the air purifier industry. If your air purifier ever fails to operate like new, we’ll send you a FREE replacement. No one else can make that promise. Reason #3 – Our Patented Odor Is Amazing! Naturally created odors such as poop, pee, urine, sweat and ammonia contain different types of compounds that aren’t easily removed by activated carbon The T500’s natural vinegar based Odor Powder is the best deodorizer for organically created body odors. Whether it’s in a litter box or, baby diaper, bathroom, or laundry room, the T500 can neutralize them!