This Humidifier Chamber is for us with the AirSense 10. If your AirSense 10 does not already have a humidifier, then one of these chambers is all you need to add that functionality. However, you may also choose to purchase the ClimateLine tubing for optimal performance.If you already have a humidifier but the chamber is cracked, leaking or has limescale build-up, then this provides a like-for-like replacement.This dishwasher safe chamber should be washed once a week. If using a dishwasher. it must be placed on the top shelf and put through a gentle or light-load wash, not exceeding 65 degree Celcius. After washing, allow the chamber to air dry away from direct sunlight.As water chambers are a consumable item, this product has a three-month warranty.