HoMedics 5 in 1 TotalClean™ Air Purifier AP-T40 Large - featuring UV-Cleaning Light technology to kill Germs, Bacteria and Viruses

Dear Janles, This model will clean 109 meters squares of air per hour, based on an average height of 2.5 meters. Kind Regards, The HoMedics team

Dear Jim2349, There is no remote control for this model, there is simply the buttons on the unit. Kind Regards, The HoMedics team

Dear Jo11, This air purifier is suitable for small-sized rooms up to 15.8 m²/170 ft². The volume of air is 75.8m²/h / 816ft²/h. The purifying area is stated in m2/h based upon a standard ceiling height of 2.43m (8 foot). You would just need to multiply by the room height that the figure is based on. We do not display the figure in metres cubed but this figure can be calculated for any of air purifiers using the room height that we base our calculations on. Kind regards, Team Homedics

Dear Heal, These would be classed as "HEPA class H14" as they have an efficiency of 99.975% or greater. Kind regards, Team Homedics

Dear fernendo, The decibels are: ≤ 45dBA @ 1M on low and ≤ 65 dBA @ 1M on all other settings. Kind regards, Team Homedics

Dear fernendo, HoMedics Air Purifiers feature HEPA Type and True HEPA filters will remove up to 99.97% of airborne contaminants as small as 0.3 microns, from pet hair, mould spores, allergens and pollen, to dust, smoke and unpleasant odours. Many models have an enhanced bacteria and virus killing UV-C feature – perfect for killing airborne germs. We recommend that you compare the CADR numbers. First, look at suggested room size. Then refer to the tobacco smoke, dust and pollen Clean Air Delivery Rate (CADR) numbers. The higher the numbers, the faster the unit filters the air. Individual situations and needs may vary, so we make certain that we test individually for the most common sources of indoor air pollution (tobacco smoke, dust and pollen) and get individual CADR ratings for each. For example, the 5 in 1 TotalClean™ Air Purifier AP-T40 Large, model AP-T40WT-GB, one of the top selling, has the following Cadr Ratings: Tobacco Smoke: 270; Dust: 282; Pollen: 275; Combined: 827 As a general rule, higher Clean Air Delivery Rates provide improved performance in all room sizes. Please note, portable air purifiers will be much more effective in rooms where all the doors and windows are closed. Sometimes the purifying area is stated in m2/h based upon a standard ceiling height of 2.43m (8 feet). If your room area is half the size the air purifier will clean the air once every 30min (or twice an hour). If your room area is one quarter of the size the air purifier will clean the air once every 15min (or four times a hour). How frequently you require your room air to be purified will depend upon the severity of your allergies and environmental factors such as the pollen count on that particular day. You would just need to multiply by the room height that the figure is based on (2.5m). We do not display the figure in metres cubed but this figure can be calculated for any of air purifiers using the room height that we base our calculations on which is 2.5m/2.43m. We recommend our air purifiers are suitable for Large, Medium and Small room sizes to ensure a constant supply of purified air and to allow for natural air changes such as external ventilation or exiting and entering a room through the door. Kind regards, Team Homedics

Dear fernendo, HoMedics Air Purifiers feature HEPA Type and True HEPA filters will remove up to 99.97% of airborne contaminants as small as 0.3 microns, from pet hair, mould spores, allergens and pollen, to dust, smoke and unpleasant odours. Many models have an enhanced bacteria and virus killing UV-C feature – perfect for killing airborne germs. Kind regards, Team Homedics

Dear Seeham, As we cannot provide any medical advice, we would advise you to ask a GP if it is safe to use the Air Purifier in that condition. Kind Regards, The HoMedics team