The Filters Fast H85 replacement wick humidifier filter absorbs moisture like a sponge and allows air to move through and saturate the air. This process is often referred to as 'cool mist', where a fan pushes air across the filter element and increases the humidity in the room. If you have water with a lot of minerals (hard water) the filter will help prevent white dust from appearing on surrounding surfaces. The attributes also reduces the changes of growth that can damage your equipment or make you sick. The Filters Fast H85 is compatible with the following humidifier models: HolmesWhite WestinghouseHamilton BeachHalls HumidifierHM1230, HM1245, HM1275, HM1280, HM1285, HM1290, HM1295, HM1296, HM1450, HM1700, HM1740, HM1910, HM2005, HM2025, HM2030WWHM16000551805519 (05910) HLS1300, 1400