Resmed HumidAir 11 Cleanable Chamber

Water chambers are specific to each machine model, so you'll need the one made for your machine. Check your machine model against this product's listing, or ask our team and we'll confirm the right chamber, and whether a cleanable or standard version suits you.

As a general guide, every 6 to 12 months, or sooner if you see cloudiness, cracks, pitting or mineral scale that won't wash off. Standard chambers wear faster than cleanable ones. A chamber that's clouded or scaled is worth replacing to keep the water clean and the seal good.

Distilled water is recommended — it has no minerals, so it prevents the scale build-up that clouds and shortens the life of the chamber. Tap water is fine for the occasional night if that's all you have, but for regular use distilled keeps the chamber cleaner for longer.

Empty it each morning and rinse it, then wash it weekly in warm soapy water with a gentle, fragrance-free soap and air-dry out of direct sunlight. For mineral scale, soak in one part white vinegar to two parts water, then rinse well. Don't put it in the dishwasher unless the chamber is marked dishwasher-safe.