This standard humidifier water chamber (with a frosted tub) will last for 6-months on average with proper care and maintance. It is compatible with all H4i (HumidAire) Heated Humidifiers as well as H3i (HumidAire) Heated Humidifiers that have been upgraded using the H4i Upgrade Kit.
This is the Flip-Top Lid (Cover) and Seal that closes and covers the removable humidifier chamber used on all HumidAire 4i (H4i) Humidifiers.
ResMed's H4i (also called the HumidAire 4i) Integrated Heated Humidifier offers some great improvments on the original HumidAire 3i design including a larger water chamber, a larger heating plate, and a more robust design with metal reinforcements. The H4i integrates seamlessly with all S8 and S8 Series II CPAP/VPAP machines.