• Installation Fee : HK$900 Model W400 Fresh AirFlow Purifier is window-mounted. It is small and compact even smaller than the smallest air conditioner. Suitable for installation for most homes, classrooms, offices, clinics and shops.
  • Installation Fee : HK$900 Model W450 Fresh AirFlow Purifier is quiet and equipped with a heavy duty centrifugal fan with its backward turning impeller which is more powerfull and more effective in raising the CADR (Clean Air Delivery Rate) to a higher level. It is window-mounted, and installed inside the unit. Suitable for most homes, and because of its power, especially suitable for classrooms, offices, clinics and shops.