Tall and robust, this Bionaire BAP1700-UK tower air purifier is suitable for rooms up to 34m². It has a HEPA type filter which removes up to 99% of all airborne pollution. Switch the built-in air quality sensor to auto mode and it will adjust the speed settings according to the ambient air quality. The Bionaire BAP1700-UK also has a washable pre-filter, two permanent HEPA type filters (that can be maintained using your vacuum cleaner and crevice tool) and an ioniser that restores the overall ion balance, creating a fresher atmosphere. A Filter Service Indicator eliminates guesswork on when filter cleaning is needed. This 3-speed Bionaire purifier also has a programmable timer that gives you the flexibility to program your air cleaner to turn on and off at your convenience.