CPAP machine filters protect you and your CPAP device from contaminants and provide optimal air quality. These CPAP filters restrict a wide range of dust, pollen, and contaminated air particles that can cause illness. We offer a wide variety of ultra-fine, hypo-allergenic, foam, pollen and bacteria filters for most CPAP and BiPAP models on the market. Filters help to clean the air that flows through your CPAP machine. It is recommended to replace your CPAP filters every four weeks. If you live in a home with pets or a smoker you will need to replace your CPAP filters more frequently. We offer a wide variety of filters so that you are sure to find what you need. From Philips to ResMed, 3B medical, and more, if you need it, we have it. Stock up with a six pack or larger and save money.