*1 Applicable floor space for operating the unit at max. air flow rate (JEM1467; The Japan Electrical Manufacturers' Association) *2 Measurement conditions: 20℃, 30% humidify (JEM 1426) *3 In accordance with the JEM 1467 standard. In a test of dust collecting and deodorizing capacity with 5 cigarettes smoked per day, the period of time after which air purifying took twice as long as the initial time, and the odor removal rate became *4 In a test performed with humidifying operation of 8 hours a day and washing with tap water once a month, the periods of time after which level of humidification became half the initial level. *3,4 Since there are theoretical values, under actual conditions of use, replacement may be required after a shorter period of time. ◎ Specifications and designs are subject to change without notice. ◎ Color tone of actual products may differ from those shown on the website. Show Our servers are getting hit pretty hard right now. To continue shopping, enter the characters as they are shown in the image below. Type the characters you see in this image: Type characters Try different image © 1996-2014, Amazon.com, Inc. or its affiliates Good pointsThe product's best features and benefits Bad pointsDrawbacks or issues you need to know about Unlock our expert review and more
Recommended We recommend air purifiers with a CHOICE Expert Rating of 70% or more. CHOICE Expert Rating This is made up of performance (70%) and ease of use (30%). Performance score Based on dust removal (50%), smoke removal (40%) and VOC removal (10%). Dust performance score How well this model filters out dust compared to the other models on test. Smoke performance score How well this model filters out smoke compared to the other models on test. VOC performance score How well this model filters out volatile organic compounds (VOCs) compared to the other models on test. Ease of use score Based on the model's onboard controls, its remote (if it has one), how easy it is to move around, whether it's prone to tip over, how easy it is to clean, and the quality of the supplied instruction manual. Comparative energy efficiency How the model compares for its energy efficiency (energy used in the dust performance test) against the other tested models. Air purifiers don't use a lot of power, but the best models combine low energy consumption with good dust removal performance. Noise on high setting (dB) The noise measured on the highest speed setting. Noise on low setting (dB) The noise measured on the lowest speed setting. Shop Ethical rating Shop Ethical rates the environmental and social impact of the company (not the product) using independent sources. This rating is not included in our total score. N/A means there is no rating for that company. D HEPA charcoal filter change interval How often the HEPA, charcoal and other special filters should be cleaned or replaced. Some models simply give a recommended time period, others will alert you, and some may do both. 10 years Warranty (years) Stated warranty of the product. You're still covered by the Australian Consumer Law regardless of the manufacturer warranty. 3 Country of origin The claim of where the product was put together. Japan Availability 'Tested model' refers to air purifiers that are currently available in shops and online. 'Discontinued model' refers to air purifiers that are no longer available in shops, but may be available second-hand. Discontinued model Price Typical retail price at time of publication. $899 Replacement filter cost The cost of replacement filters: HEPA, pre-filter and carbon filters as appropriate for each model. Some models have an all-in-one filter that combines all these types and must be replaced entirely each time. N/A = not available (we couldn't find any replacement filters or pricing; note the Hitachi claims 10-year life for its filter.) $179 Replacement filter cost per year Estimated cost per year for replacing the filters, based on the manufacturer recommendation and assuming the best case for how long the filter is claimed to last. Some filters will need to be changed more than once a year, other filters will last longer. $18 Fan settings The number of fan speed settings, including special modes such as night, heating and automatic. 4 Claimed room size The claimed room size (usually a maximum) for which the air purifier can keep the air clean. Treat this as a guide rather than a rule. 53m² Dimensions (cm, H x W x D) Rounded to the nearest cm. 67 x 36 x 26 Weight (kg) 10.3 Websitehitachi.com.au HEPA filter High Efficiency Particulate Air (HEPA) – capable of trapping extremely small particles of dust, smoke and even bacteria and viruses. These filters need to be periodically replaced. Yes (HEPA) Pre filter A coarse filter to catch big dust particles and pet hair so that they don't clog the HEPA and other filters. These can usually be washed and reused but may need to be replaced eventually. Yes Charcoal filter Charcoal or carbon filters are said to be good for trapping odours and VOCs such as formaldehyde. These can usually be washed and reused but may need to be replaced eventually. No Ionisation filter Generates charged particles (ions) to remove pollutant particles and microbes from the air. These filters need to be periodically replaced. Ionisation of air can produce small amounts of ozone which is a breathing irritant. No UV sterilisation UV light can be used to kill bacteria and viruses trapped by the purifier. We haven't tested this feature. No Ozone generation Some models use ozone to remove dust and other particles form the air. Excessive ozone can be a breathing irritant and we generally recommend avoiding these models, but include them in the test to see how they perform. No Remote control Does the device have a remote. No Wi-Fi app Some models can be controlled via an app on your smartphone. The app may also show data about the amount of pollutants detected and removed. No Timer Most models have various timer settings to run for a set number of hours. Timers might apply only to certain modes such as Night or Away (for use when you're away from the home). Yes Claimed CADR dust removal (m3/hr) The model's claimed dust removal rate as per industry-standard Clean Air Delivery Rate (CADR) tests. This shows how cubic metres per hour the model claims to process. 420 Claimed bacteria and virus removal The claimed percentage of microbe removal, or other related claims. We haven't tested this aspect of performance. What is the1 air purifier?Our top pick by far is the BlueAir Blue Pure 311i Max. It's a quiet option at a reasonable price with great performance in medium-sized spaces. However, this isn't the only quality option, there are others worth a look. CNET's favorite air purifier is the Honeywell Home Allergen Plus. How many hours should I leave my air purifier on?In the case that the windows cannot be opened for ventilation, you should leave an air purifier on for at least 4 hours a day. When the air quality is poor, it can be even run for 8 hours. 3. If it is a newly renovated house, you can run an air purifier all the time. Are plug in air purifiers any good?Plug-in air purifiers are a good choice to improve indoor air quality and can help certain groups of people, like those with asthma and allergies. Does it matter which air purifier you get?EPA recommends looking for air purifier models that provide at least 4.8 ACH for the recommended room size to help improve your indoor air quality. A device labeled to provide 4.8 ACH in a 10'x12'x8' room can treat the air in a room of that size 4.8 times each hour. |
