DIY HEPA level air filter
January 22, 2022 at 6:02:13 AM PST * - permalink - -

- https://cleanaircrew.org/box-fan-filters/

Homemade Portable Air Conditioner DIY - Coldest One Yet! - YouTube
June 18, 2020 at 12:02:10 PM PDT - permalink - -

- https://www.youtube.com/watch?v=FS2YaJkkHQY

Don't Buy Cars that Use this New Type of Refrigerant in the AC System - YouTube
February 5, 2019 at 11:52:19 PM UTC - permalink - -

- https://www.youtube.com/watch?v=wm56tV5BbJk