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Comment by sumoboy | Hacker News Reader

In the end, you'll still need an air purifier unit to clean a room(s), or the entire house. Indoor air quality is a much bigger issue than most realize.

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That depends on your location. I've built something similar to this tool that is discussed here and I've tested in multiple locations.

For example, Vienna air was so clean (<= 10 pm10 ug/m^3), that you don't need any purifiers or anything like that.

If you think Vienna's air is clean, you didn't measure during winter and/or during an inversion. You absolutely need air purifiers.

Are there stand-alone air purifier units that are worth the hassle?

Yes look at the Coway AP-1512HH. I have one in each bedroom. It also has a good air quality sensor and “auto” mode that’s driven by it. Among the competition, it cleans better than most and has a low TCO. Very quiet on “low”

I have one too. I got it based off of the recommendation from the Wirecutter: https://thewirecutter.com/reviews/best-air-purifier/ .

Alot of junk out there so thinking your cleaning the air effectively with a $100 unit is hilarious. You might filter more dust but not the particles you may really need. Products like Amaircare can be attached to your entire hvac and clean all the air multiple times an hour depending up on the size. Other room purifiers can target specific things like chemicals, dander, and dust but these units cost more because you get what you pay for. If you worked in a salon or paint store all day long, there is a lot of stuff floating around. Better units have very good filter(s) which is the difference.

The Winix C535 from Costco for $100 is a great deal: https://www.costco.com/Winix-C535-Air-Cleaner-with-PlasmaWav...

why?

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