2026 versions of DreamWell and Invisible Mist humidifiers are equipped with smart water pump performance monitoring built directly into the devices firmware. Overtime, scale and other debris can build up on the water pump, preventing it from operating at peak performance. When reduced pump performance is detected, the device displays the letters "CL" to alert the user that it is time to clean and descale the tank and pump. 

2026 Invisible Mist (H335i)                                            2026 DreamWell (H38i/H76i)