Fisher and Paykel have created a whole new style of chamber for their SleepStyle range of CPAP machines. Following on from the feedback from their previous Icon series the new chmaber is now able to be opened which makes the cleaning much easier. This has a stainless steel base which will reduce the risk of corrosion. The fact it can be cleaned in the dishwasher also enhances the ease of cleaning. The chamber has 2 easy to fill holes at the top which allows the chamber to be easily filled. The maximum fill water line guides you to the level of water you should fill the chamber to. The manual still recommends distilled water as this prevents excessive discolouration of the chamber when using standard water.