According to the US Environmental Protection Agency (EPA) indoor air can be five times more polluted than the outdoor air. As indoor air remains enclosed and not circulated as much as outside air, many pollutants tend to thrive inside, which increases the risk of respiratory infections, neurological problems, etc. for the occupants. Pet dander, pollen, dust mites, paint fumes, smoke released from cooking are some of the common types of indoor allergens that can deteriorate the air quality. Besides, lack of ventilation, dirty upholstery, and humid environments contribute to the harmful indoor environment, making children, aged population, and people with chronic conditions more vulnerable to numerous health issues. However, high-efficiency particular air (HEPA) filter can help to clean the bad indoor air by accumulating pollutants. It works to pull air into the machine at the base through a fan, the instilled filters catch the pollutant in the perforations, and the machine then releases the fresh air into the surroundings. A true HEPA filter can remove up to 99.9% of the dust particles, measuring as small as 0.3-micron diameter. Some types of air purifiers have charcoal filters that can absorb odors and harmful chemicals while others have UV filters that kill harmful microbes present in the surrounding air.
Here is a list of top ten air purifiers that provide effective protection against the indoor pollutants.
Coway AP-1512HH Mighty
Designed for rooms up to 361 sq ft., Coway AP-1512HH Mighty utilizes a decent 4-stage filtration process, including pre-filter (first stage), carbon filter (second stage), True HEPA filter (third stage), and ionizer (fourth stage). It not only uplifts the décor in the room, but also delivers excellent air filtering performance at a rapid speed. The Coway AP-1512HH Mighty air purifier draws air from vents located at front, left, right, and bottom, and the filtered air comes out vertically upwards. While being on Eco mode, the device automatically adjusts the fan speed by collecting data from the quality sensor. If the air quality during the last 30 minutes of the device is excellent, the device will automatically turn off, and thus save electricity, reduce noise, and ensure filter quality.
The device features a timer option that facilitates those users who want to run the device for a specific period. The pre-filter requires to be cleaned between 14 to 28 days, but if you have pets, make sure to clean the filter as frequently as possible. The True HEPA filter captures 99.7% of airborne particles including dirt, mould spores, microbes, smoke, pet dander, etc., but the filter is not washable. However, the device comes with only one carbon filter so, replacing it would cost additional maintenance charges along with the hefty price of the device.
Blueair Blue Pure 211+
One of the most popular models from 室內空氣質素 Blueair, Blue Pure 211+ is the #2 top-rated air purifier tested by Consumer Reports. The filtration technology consists of pre-filter and 2-in-1 particle plus carbon filter with electrostatic charging (HEPASilentTM), which has almost the same efficiency as HEPA filters (99%). When it comes to handling the particulate contaminants, pre-filter can capture hair, lint and dust, etc. The super-efficient particle filter is made up of polypropylene, which requires to be washed off every six months. The activated mesh-type carbon filter is capable of trapping airborne chemicals, smog, cigarette smoke, volatile organic compounds (VOCs), etc. With a clean air delivery rate of 350 cubic feet per minute, the Blue Air Bluepure 211+ can clean air up to 525 sq. ft. five times per hour. The air purifier has low noise profile, ranging from 31 to 56 dB(A), so one can process more air while generating less noise.