ResMed AirFit F30 Full Face Mask vs. ResMed AirFit F20 Full Face Mask

Both are ResMed full-face masks at a similar price point (F30 at $159, F20 at $149 — both currently on sale). The meaningful difference is cushion design: F30 uses an under-nose cushion for a lower-profile fit, while F20 uses ResMed's InfinitySeal cushion covering more of the nose and mouth.

F30's smaller cushion footprint tends to suit side sleepers and anyone who found a standard full-face mask too bulky against a pillow; F20's larger seal area is often the more forgiving fit for restless sleepers or mouth breathers with a wider face shape.

Both are eligible for our 90-day fit guarantee, which is the more reliable way to settle a fit question than specs alone — if the first choice doesn't seal well, the exchange is free.