Give yourself a pat on the back if you bought an N-95 mask to protect you from the Great Smog of Bangkok, but here’s something to worry about next. Unfortunately, those pesky particles can pollute the air indoors, too, meaning the threat isn’t left out on the streets. To keep your home fresh and healthy, here are some of the best air purifiers on the market. 

See also: These 5 pollution masks will protect you during the Great Smog | Beat the Bangkok smog with these 7 apps

Mi Air Purifier 2


What: If this bad boy by Xiaomi is good enough to tackle hazardous conditions in China, then it should be able to handle Bangkok. While this model is 40-percent smaller than its first generation, it claims to be able to purify a room in just 10 minutes at a Clean Air Delivery Rate of 310m³/hr. Apart from filtering out PM2.5 particles, its 360-degree three-layer cylindrical filtration system can also remove dust, bacteria, indoor plant pollen, smoke and other unpleasant odors, all the while consuming 58-percent less energy than its predecessor. Control the air purifier through the Mi Home app on your phone, plus check air quality in real time, set schedules to power on/off, switch to night mode and control the wind speed. The app even reminds you when to change the filter, according to its “filter usage statistics.” Sweet!
Price range: B7,959
Available at

Dyson Pure Cool Purifying Tower Fan

What: If you don’t mind blowing some serious baht on the ultimate smog destroyer, then this is the purifier for you. Of course, being Dyson, this looks more like a modern sculpture than a typical air purifier. The tower, or floor version (Dyson also offers a desk version), stands at 41.5 inches tall with a slim 8.8-inch base. It comes with double-layered filters—a carbon filter to remove gases and a glass HEPA filter that Dyson claims can capture up to 99.7 percent of particle pollutants as small as PM0.3. In auto mode, the LCD display shows you which pollutants are detected in the air in real time, after which purified air will be projected around the room through its Air Multiplier technology. You can set schedules and monitor your air quality with the Dyson Link app, or enable voice control with Amazon Alexa.
Price range: B28,900
Available at Dyson, 2/F, Siam Paragon, Rama 1 Rd., 02-129-4338. Open daily 10am-10pm

Blueair Sense+

What: Hailing from Sweden, the stylish Blueair Sense+ air purifier can add a pop of color to your room with its vivid green, blue or red renditions, while the usual monochromatic colors are also available. At 19 inches tall and 18.5 inches wide, the Sense+ is designed for use in a room of around 17 square meters, which means most bedrooms. Just like the Dyson Pure Cool, the Sense+ comes with two filters, a HEPA particle filter and a carbon filter to remove heavy gaseous pollutants. Here comes the fun part: with the motion sensor (the unit has no buttons or remote), you can turn it on or off with a wave of your hand, while more waving will adjust the fan speed. The unit is also Wi-Fi enabled, which means you can do more fine-tune controlling through its Blueair Friend app—from adjusting the LED screen’s brightness and fan speed to other functions like night mode and child lock. Compatible with Amazon Alexa.
Price range: B26,000
Available at Power Buy branches nationwide. Try 4/F, CentralWorld, Rama 1 Rd., 02-646-1241. Open daily 10am-10pm

Honeywell Air Touch i9

What: This is a hugely popular air purifier in India, which also has through-the-roof smog levels. Honeywell claims its three-stage HEPA filtration system can remove up to 99 percent of pollutants and purify a 38.5-square-meter room in just 15 minutes at a Clean Air Delivery Rate of 300m³/hr. The device also comes with “Smart Eye Technology” that automatically adjusts the fan’s speed according to the level of your room’s air quality. An indicator ring on the LED screen displays the the air quality of your room—blue for clean air, yellow or orange for moderate, and red for “get the hell out.” There’s no remote or app for controlling the Air Touch i9, but there’s a smart automatic monitoring mode that’s pretty neat: the air purifier will automatically turn off when the PM2.5 level is less than 25 µg/m3 and turn itself back on again when it detects a change in air quality.
Price range: B21,900
Available at Power Buy branches nationwide. Try 4/F, CentralWorld, Rama 1 Rd., 02-646-1241. Open daily 10am-10pm

Philips Air Purifier Series 3000

What: Standing at 18.7 inches tall and 13.4 inches wide, the latest offering from Philips is ideal for large living rooms. The Series 3000 offers a high Clean Air Delivery Rate of 367m3/h through its extra thick NanoProtect HEPA filter, which Philips claims can effectively remove ultrafine particles as small as 20 nanometers—more than 100 times smaller than PM2.5!—as well as remove 99.97 percent of common airborne allergens, 99.9 percent of bacteria and even some viruses like H1N1. Wowza. Another highlight is its AeraSense real-time air quality monitor, which provides you up-to-date PM2.5 levels together with a four-step color ring feedback—blue means good, red means bad, you get the idea. The device also continuously monitors the air and automatically adjusts the fan speed when it detects a change in particle levels.
Price range: B24,990
Available at