CPAP filters keep your therapy air clean and free of dust, allergens, dander, and more. Available in two types, disposable CPAP filters are typically made from a paper-like material and should be replaced every 30 days, while reusable CPAP filters are typically made from foam and can be washed and used again for around six months. Replacing your CPAP machine filters on schedule will maintain optimal therapy air quality and prevent debris from entering and damaging your machine over time. Find affordable CPAP air filters at CPAP Supply USA and earn free shipping on orders over $49.