Exclusive offers when you buy online direct from Dyson. Sign up to receive news about our latest inventions and offersNote: This article was first published on 9th September 2015. It looks like the haze is making a comeback and there’s not much we can do except stay indoors, wear masks outdoors, and drink lots of fluids. Another way to cope is to get an air purifier for the home, but knowing which features you need and which you don’t can get confusing. If you haven’t already bought one, here’s what you need to look out for. You can skip on everything else, but the one thing you must have in an air purifier is a High Efficiency Particulate Air (HEPA) filter, which can remove more than 99.97% of 0.3-micron particles. That 0.3-micron figure is important. There are two ways of measuring particle matter (PM): PM10 and PM2.5. PM10 measures particles from 2.5 to 10 microns in diameter, while PM2.5 measures particles 2.5 microns in diameter or less. A human hair has a diameter of 40 microns, so these are extremely small particles that you can’t see with the naked eye.

To put it another way; just because you can’t see them doesn’t mean that they’re not there. PM10 particles can be trapped by your nose or throat, but PM2.5 particles are so small that they can slip through and lodge in your lungs, causing all sorts of health problems.Apple Laptop To Vga Cable To trap and filter PM2.5 particles, you’ll need that HEPA filter. Used Snow Chains SaleWithout it, any air purifier is really just decoration. Buy Second Hand Furniture In FinlandWe recognize that air purifiers with HEPA filters can cost more, but if you want to get something to do a job, then you need to know that it actually does that job. Beware of air purifiers claiming to be “HEPA-type,” “HEPA-like,” or “99% HEPA,” which are not true HEPA filters and not as effective.

The second thing to look for is an air purifier that’s built for the size of your room. If you put an air purifier built for a small room into a large one, it won’t be able to filter air as well. Some manufacturers list the recommended area in their specifications sheet, which is an easy way to find out if that model fits your room. Some list a number called CADR, which stands for Clean Air Delivery Rate. CADR is an independent test result from the Association of Home Appliance Manufacturers (AHAM) in the US. The number is expressed in cubic feet or meters per minute, and it measures for tobacco smoke, pollen and dust filtration. The higher the CADR number, the more air it filters per minute for that particle. Note that CADR doesn’t measure the effectiveness of the size of particles being filtered, that’s where you still need to have that separate HEPA filter specification. AHAM recommends a ‘two-thirds’ rule when it comes to the tobacco smoke rating, that is, you’ll want to find an air purifier with a CADR (tobacco smoke) that is at least two-thirds of your room’s area.

The problem is that the number is mostly listed in square-feet, not square-meters, so you’ll have to do the conversion yourself. For example, if you have a room that is 120 square-feet, you’ll need a CADR (tobacco smoke) rating of at least 80 (two-thirds of the room’s area). Yup, some math is required. If you truly cannot afford to get a HEPA air purifier sized to your room, then you can consider placing a smaller-rated air purifier closer to the important areas, like near your bed, or near the sitting area of your living room. Alkaline Water filtration System AIRCON SERVICE REPAIR N INSTALL 100% CLEAN SATISFY GUARANTEE! WE REALLY CLEAN IT C&G Car Air purifier/ Cleaner/ Great Gift For Techies/ Haze Protection Honeywell Long-Life Pure Hepa Quietcare Air Purifier 17000-S c/w transformer Himalaya natural salt stone lamp. Air purifier N revitalisor Brand new Novita filter for air purifier model NAC313 Novita Air Purifier NAP 301/313 for sale

New Himalaya natural salt stone lamp.$30 New Himalaya natural salt stone lamp.$25 Philips combi air purifier n humidifier AC4081/31 Sharp Air Purifier FU-A28 Novita air purifier x2 Brand new Sharp air purifier with mosquitoes catcher (Zika) [Xiaomi Smart Air Purifier 2] - use app check air quality Results 1 to 20 of 255 adsAbout HazeHotspot & Satellite ImagesHealth AdvisoriesAir Quality InformationFAQUseful Links Portable air cleaners are compact, stand-alone appliances designed to keep the particulate levels of an enclosed space low. In general, there are three main types of air cleaners available in the market. They are: a) Ionisers- which impart negative charge to the particles that subsequently stick to surrounding surfaces or are filtered out; b) Electronic air cleaners- which removes particles by electrostatic precipitation; and c) High Efficiency Particulate Absolute or HEPA- air cleaners which remove particles by mechanical filtration and diffusion.

Some portable air cleaners come with a combination of the above features. Several models of air cleaners have been found to be able to reduce the level of fine particles in a typical bedroom to an acceptable level during a smoke haze, such as that experienced by Singapore in 1997. For more information, please view the List of Portable Air Cleaners (For Smoke Haze) and Suppliers. The listed air cleaners will be able to provide adequate protection to a typical HDB bedroom with its doors and windows closed, except for occasional opening and closing of doors. Doors and windows should be opened up occasionally, or at least once a day, to ventilate the room. For the purpose of smoke haze protection, it is useful to know the Clean Air Delivery Rate (CADR) which means the amount of clean air that a device can produce for a room. A higher CADR indicates greater ability to return clean air to the room. Knowing the CADR, as well as the room size where the air cleaner is to be installed will allow consumers to make an informed purchasing decision.