DetailsThe Z1™ HME is an inline humidification solution unit for use with the Z1. It is a waterless humidification that requires no additional power and takes up very little space. A great alternative to large humidifiers. Note that our HMEs are certified for 7 days of use but environmental conditions may affect your experience. If you are using an HME and feel that it is no longer working we recommend that you switch to a new one.