How Often To Replace Air Filter “How often you replace your air filter will depend on filter type, usage, and environmental factors," Goddard advises.

A continuous positive airway pressure (CPAP) machine is the most commonly prescribed aide for someone suffering from obstructive sleep apnea.

Using a CPAP machine can improve your AHI. If your AHI does not get better with the use of a CPAP machine, talk to your healthcare provider about adjusting the pressure settings.