What combination of air filters do I need to protect against everything?

ओह! यह पोस्ट हिन्दी में उपलब्ध नही हैं।अंग्रेजी संस्करण के हेतु यहाँ क्लिक करे l


The Sqair air purifier Kickstarter

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To make your air purifier effective in a room you have to shut windows and doors and plug leaks – but if you sleep in the room carbon dioxide builds up, which the activated carbon filter cannot reduce. So you have to allow some outside air. How much? And how does one measure and ensure it?


I live in Delhi, where air purifiers are indispensable.

My concern is co2 buildup. Outside air quality is so poor that we do our very best to seal off our houses completely.

Do you think that in a typical home scenario, co2 buildup is a concern? If so, how would you address it?

Chiu Ying Wong

thanks for the analysis. It has almost everything I need to know to keep my indoor air clean. 2 questions remain: how do you know when activated carbon is no longer useful? “full”? is activated carbon “washable”?


Thanks for sharing your knowledge.

I read a study saying there is some ionizer that emits no ozone.

Do you know how to make a DIY VOC air purifier from charcoal granules? I tried, but there were a lot of fine dusts from the granules.

Chris Mclester

Thanks so much for pursuing your passionate curiosity about the confusing mysteries of the air purifier industry. As an allergy sufferer and pet lover living in Florida, we are never without an abundance of daily assaults.
Air purifiers are nothing short of costing a significant portion of your budget. I’ve always wondered who the Wizard of Oz was behind the technology.
What a gift you and your team have brought to the world. Will anxiously await your new product. 🙂