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Re:How Dirty Is Your Air? by reedlaw on Wednesday June 01, 2016 @08:00PM (#11819334)
I live in China and have a Laser Egg (1) in my home. It's extremely accurate, often matching the AQI reading found by online services. What I'm interested in is learning how to purify the air inside. I knew cooking was a major culprit in raising PM2.5 levels. But even when running two air purifiers sometimes the AQI just can't be lowered too much. I think it's leaky seals in the apartment. We're on the 18th floor and on a windy day can feel a huge draft from the front door and hear the wind escaping the balcony windows.

1. http://www.originstech.com/products/laseregg/

Re:How Dirty Is Your Air? by Sukotto on Wednesday June 01, 2016 @09:29PM (#11819718)
If you haven't seen it, this TED talk on using plants for air purification is pretty cool: https://www.ted.com/talks/kamal_meattle_on_how_to_grow_your_...
Re:How Dirty Is Your Air? by martian on Wednesday June 01, 2016 @09:04PM (#11819623)
I bought a top rated air purifier a couple months ago off of the recommendation from Wirecutter. I live in SF, not China, but it's dramatically improved quality of life in my apartment. It cleans out smokey air from cooking very quickly, and cuts down dust/particulates especially in the spring months when pollen is everywhere. Highly recommend.
Re:How Dirty Is Your Air? by cglace on Wednesday June 01, 2016 @09:55PM (#11819828)
Just curious, which purifier?
Re:How Dirty Is Your Air? by chdir on Thursday June 02, 2016 @01:26AM (#11820562)
Re:How Dirty Is Your Air? by martian on Thursday June 02, 2016 @10:25AM (#11822663)
Yes, the Coway. I've had it for a few months now and just leave it on all the time on auto/eco mode.
Re:How Dirty Is Your Air? by lisivka on Friday June 03, 2016 @10:47AM (#11830610)
I have purifier with large HEPA filter, purifier with water filter, ultrasound humidifier, but the best result so far is by vacuum cleaner with water filter (Thomas with Auquafilter). Water works extremely well against tiny particles, much better than HEPA.
Re:How Dirty Is Your Air? by derefr on Wednesday June 01, 2016 @10:48PM (#11820031)
One thing I've never figured out about air purification is how to keep air both particle-free, and oxygenated. I don't want to seal all my doors and windows to run an air purifier—I immediately feel suffocated by the CO2 buildup from my own breathing. Is there a best of both worlds?
Re:How Dirty Is Your Air? by eightysix_four on Thursday June 02, 2016 @12:30AM (#11820375)
Fresh air systems are what you are looking for. They purify and bring in outside air (be warned, they lower HVAC efficiency), a lot of them with a high enough CFM to pressurize your house to, exhausting all of the air inside outward so that the leaky seals aren't an issue.
Re:How Dirty Is Your Air? by seanmcdirmid on Thursday June 02, 2016 @06:55AM (#11821553)
The problem is that these don't fit into most Chinese apartment rentals. Landlords could make some big bank by installing an HVAC, but they are missing even in new buildings where 90sqm apartments are going for more than a million bucks.
Re:How Dirty Is Your Air? by derefr on Friday June 03, 2016 @06:19PM (#11833687)
Yep. My little apartment (400m²) in a low-rise in Canada, built just five years ago, has no in-unit ventilation whatsoever. If I want a cross-breeze (and I always want a cross-breeze), I have to open the outside windows and the door to the hallway, and let a ton of dust and pollen flow into the unit from outside. I have no idea who thought building an apartment building today like this made sense, but it seems to be a common perspective.
Re:How Dirty Is Your Air? by seanmcdirmid on Friday June 03, 2016 @07:18PM (#11833935)
400 sqm is a "little" apartment? Sheesh, first-world problems :)
Re:How Dirty Is Your Air? by internaut on Thursday June 02, 2016 @06:46AM (#11821523)
That's why HRV systems exist.

Keep your environment's air clean while retaining the heat plus circulating fresh oxygen.

I intend to get a decentralized HRV like Lunos for my passive Tiny House. Any problem regular houses have with air quality, will be multiplied in a Tiny House without proper precaution.

Re:How Dirty Is Your Air? by legulere on Thursday June 02, 2016 @03:06AM (#11820845)
Modern insulated houses (think Passive houses) have automatic heat recovering ventilation because everything is sealed. Many heat recovering ventilation systems that have an air purifier integrated. Many also vary ventilation automatically depending on the inside air quality.
Re:How Dirty Is Your Air? by TheRealPomax on Thursday June 02, 2016 @12:27AM (#11820364)
More plants in your house. It makes a surprising difference.
Re:How Dirty Is Your Air? by rahimnathwani on Thursday June 02, 2016 @01:58AM (#11820638)
I open the windows for 20 mins, twice per day. The rest of the time, the windows are closed and air purifiers are on.
Re:How Dirty Is Your Air? by seanmcdirmid on Thursday June 02, 2016 @06:53AM (#11821538)
You need good Windows. We switched our apartments in Beijing, and it made a world of difference in indoor air quality with our big blue air running. The problem that "purified air" becomes stagnant enough to be uncomfortable, even if clean, so we open the windows whenever the AQI is below 170 as long as a dust storm isn't going on.