Replacement diffuser filters for CPAP masks are designed to reduce noise and air draft, providing a quieter and more comfortable sleep experience. These filters are commonly used with specific mask models—such as the Fisher & Paykel Brevida or Zest Q—and can be either disposable or washable depending on the manufacturer. For example, the Fisher & Paykel Zest Q mask diffuser filter can lower noise by approximately 5 dBA and is straightforward to replace. The Eson 2 nasal mask offers a reusable diffuser filter that should be washed weekly and replaced when worn or damaged
