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bradknowles • yesterday at 8:18 PM • 2 replies • view on HN

For air filtering, you want big fans that move relatively slowly. At least, at lower settings.

I still haven’t seen anything else that can compare to IQAir HyperHEPA filters. They use these things in hospitals.


Replies

jefftk • today at 12:58 AM

IQAir HyperHEPA is substantially worse than the AirFanta 3Pro. The 3Pro gives you about 10x more clean air per dollar (2 CFM/$ vs 0.2 CFM/$), and 2.5x more clean air at a given noise level (45dBA: 213 vs 86 CFM).

I agree big fans moving slowly is better all else equal, and something AirFanta-like that used a 12" fan could be even better.

turtlebits • yesterday at 8:58 PM

All my air filters are sized to clean air while being quiet.

Turning them up to med/high would just cause too much airflow.