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patrickktoday at 7:15 AM4 repliesview on HN

If you’re so inclined, you can build your own air purifier with laser cut panels or 3d printed panels and use a cheap ikea air filter and standard PC fans. All the parts are readily available, and user repairable.

If you pair if with an Apollo AIR-1 you can have home assistant ramp up and down the fans with a PC fan controller based on live readings of PM2.5 in your home. I did this with the help of Claude code.

https://www.thingiverse.com/thing:6826527

https://makerworld.com/en/models/2470181-nukit-tempest-euro-...


Replies

agostoday at 8:39 AM

if you're going to IKEA for the filters you might as well buy the whole purifier. it's cheap and it works well

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OroPlatoday at 11:09 AM

Looks like a cool project, but the 99.97% HEPA filters are the expensive part. Building yourself only makes sense if you want to choose your own aesthetics or enjoy doing it.

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smackeyackytoday at 10:49 AM

Didn’t the Apollo 13 crew make an air scrubber out of duct tape and hope? Surely a cardboard box, a box fan and a hepa filter covered in tape gets you 90% there

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swiftcodertoday at 8:26 AM

I really wish the DIY folks would measure the airflow and sound levels on this sort of thing. CADR and decibels are going to vary wildly with fan choice

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