Toxic smog returns to Greater Bangkok

[Gaybutton]

For air purifiers, Moses posted the following on the Sawatdee board:

You should look for something with HEPA filter and airflow from 300 m3/hour and up (when I buy such things usually I calculate 10m3/hour per 1 m2 of appts with celling up to 3 meters high).

Something like Xiaomi Mijia Air Purifier 4 Pro or Electrolux EAP-2060D Yin&Yang (2075D is better tho)

Essential are HEPA filter and night mode, air analyzer and automatic controller is a big +++

Do NOT pay too much attention to declared by manufacturer suitable area, airflow in night (silent) mode is the most important characteristic, you should have at least 10 m3 per hour per 1 sqm, next one is noise in silent (night) mode, it should be below 24 dB, up to 36 dB is OK for day mode.

https://sawatdeenetwork.com/v4/showthre ... post297957

[Jun]

I expect Moses has offered good advice for a resident, or anyone prepared to pass the expensive device onto a friend when leaving.

I spent 320 baht on some filtrete from Lazada and installed it in the hotel aircon. This seems to halve the PM2.5 in the room in about 30 minutes, which is a good response. By morning, it's around 5~6 in the room and about 40 outside. I expect people owning their own properties could do better, with additional sealing around doors etc.

The filtrete is available in larger quantities in a roll, which ought to work out cheaper. However, many vendors have sold out. A smart move might be to buy before the dry season.

[billyhouston]

Whereas here in Chiang Mai we have an AQI of 156 and a PM2.5 of 62.7 at 1800.

In the filtered bedroom we have PM2.5 of 14.