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How to Make a DIY Air Filter | Ask This Old House

This Old House · tutorial · Watch on YouTube

Home, DIY & practical skillsPower grid, heating & buildings

What it is

This Old House's Ross Trethewey explains MERV filter ratings and how air filtration works, then shows how to build a localized DIY air filter, including a box fan with multiple filters.

Why Hacker News recommends it

HN recommends it as a practical breakdown of filtration versus air volume and a clever box-fan filter design.

  • 2 people recommended it
  • 2 different months
  • 0 strong recommendations
  • first 2021, last 2022

What HN commenters said

  1. “This Old House made a great video on the subject of using box fans with filters”

    Great video on box fans with filters.

    Meleagris, 2021-02 · Recommendation · in “The Cuboid: A DIY air purifier that's better than a box fan”

  2. “This Old House has a really good breakdown on filtration and air volume and have a pretty clever DIY box fan approach using multiple filters.”

    Good breakdown of filtration and air volume with a clever multi-filter box fan.

    tootie, 2021-10 · Recommendation · in “Real-world data show that filters clean Covid-causing virus from air”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: air filter, merv, box fan, indoor air quality, diy

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