This product is perfectI ordered this Homedics HEPA Professional Air Purifier in 2012 April for summer being a hay fever sufferer for a hundred pounds and I immediately started to regret that I was silly to spend so much money and even doubted that it would make my allergy problems go away. I could not cancel the order because it had already been made. However the delivery arrived in two days as promised and I started using it immediately. I love the sound when on number one button and I covered the inner filter with an extra thin layer of "all purpose cleaning cloth" from Wilkinson to prolong cleaning the main filter hence I love DIY. I still down-played this product in my heart but then started to notice the difference in few days.I tell you nothing but the fact, it is extremely perfect and it functions just like what the manufacturer said. All my life-long stuffy nose, sneezing, watery eyes, coughing and breathing difficulties which usually woke me up in the middle of the night or at daylight mainly during summer have all disappeared.

Then after two months I opened the product to checked air filter and saw that the cloth I deposited over filter was covered in loads of dust, hair strains which was not mine plus other micro-particles. No matter why my room furnitures barely had dust too. If you keep it on day and night there would not be any dust in your room unless when switched off. cleaning cigarette smoke from air ductsIt is energy efficient and would recommend anyone who wants to buy it. air purifier coughWhat a great value for money as compare with what it does. best chinese air purifierIt is physically beautiful.The weaknesses are: Even though the advertisement mentioned that the product has a washable filter, it really does not have any washable filter.

Instead it has a removable large filter with a warning light when filter needs to be cleaned. Over time (around 18 months) filter must be replaced for great results which can be purchased online but a bit costly. This is why I placed a thin cloth over filter to pre-filter the dust. The product also lack a good handling capacity unless with two hands. The last problem is that this product could not be reduced in its size in order to fit inside my nose to enable me brief a cleaner air whenever I go down the town to do my shopping . . .it's a bit annoying or maybe some long-term cetirizine tablets will take care of my out-door activities.HoMedics HEPA Professional Air Purifier(NOTE: If you want to prolong the HEPA filter's life, if possible without even having to vacuum or change it for nearly a decade, you might want to adapt what I did to mine: For UK residents please go to wilkinson store and purchase an ALL PURPOSE CLOTHS,10 PACK 60CM X 30CM APPROX. WILKO EVERYDAY VALUE: THIS IS INFORMATION IS PRINTED IN BLACK COLOUR WITH A YELLOW BACK-GROUND, COSTING LESS THEN A POUND you cannot miss it and it is very thin for the filtration of air without nose.

I have tried all other but this is the thinnest. Open up the plastic and remove one cleaning cloth then use a scissors to cut it into two equal parts depending on the size of your filter. Or you might want to use a whole but make sure it does not interfer with the back air flow. Open your air purifier and remove filter and lay one piece over the filter and then use a bit of clear sticky tape to hold the cloth in place but you must be mindful of the positioning by looking at the reading on the filter,replace after every two months if you use it every day. This knowledge could be used on any filter to prolong life and save money and ensure effectiveness. This method also keeps the filter free from being vacuumed because nearly all micro particles are caught except for bacteria. This idea does not in anyway affect the over-all performance of your air purifier at all. Manufacturers make billions every year from replacement products and this is my way of fighting back and safe money, not being indebted to companies for the rest of your life simply because you bought something off them.

.that's ridiculous paying nearly twenty quid after every few months to replace this filter. And unless the warning light goes off I might never vacuum mind after the next ten years.. I am sick of this financial slavery.This is another trick to regulate how long and how often to keep it running without having to physically touch the device every time you want to switch it ON or OFF because the AR10 model did not come with a factory mounted timer. Even the AR20 model which comes with a 12 hour timer is a rubbish because 12 hour timer is no good instead a 24 hour timer is great.What I did was I bought a 24 hour timer from Wilkinson and programmed my desire settings on timer. I depressed the air purifier ON/OFF switch tilting it side-way and wedged it with a tooth-pick in order to keep it ON constantly which will allow the timer to control its function. By doing so, you could re-adjust the timer settings any time you want without touching the air purifier standby switch. To switch it OFF, simply pull it from the timer.

Another good thing about this trick is, you could place the air purifier a bit further away from your bed into any corner of your room. This can totally reduce air purifier noise especially on number one, and you can watch TV in peace or have a good very low noise sleep. Air purifier could be left on to be control by timer while you are away without it having to use up electricity whole day.Good but amazing if you pimp it outQuiet, effective and well madeand looks like it will work but unfortunately has made no difference ...Works exactly as specified. :)Best thing I've ever ever bought. XWorks well and RobustThis air cleaner works, I suffer from pollen related allergies and this filter has stop my sneezing and wheezing. I use this in the bedroom.I also have the larger unit Homedics AR-20 HEPA Filter Air Purifier for the living room both work the exactly the same just different capacities.Con:It doesn't have any handles. I could grab it by the side but I have to bend over to pick it up, and this method isn't sturdy.