Pin kit · Air Purifier Sizing

What CADR Do I Need? Start With the Room

Name: EPA minimum CADR by room area
Creator: U.S. Environmental Protection Agency
License: https://www.epa.gov/indoor-air-quality-iaq/guide-air-cleaners-home

Every page on this site ships with its own pin artwork, drawn from the same EPA-sourced figures as the article, nothing on the pin that the page cannot prove.

a pin card showing 65→390 cfm, the minimum clean air delivery rate 100 to 600 sq ft, EPA

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The vertical pin is served at a stable URL (roomandfilter.com/pin/what-cadr-do-i-need/image) so the media travels with the pin wherever it is saved.

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What the pin points at

The whole method in one page: measure the room, read the published minimum, check the smoke rating.

Board: Air Purifier Sizing
Pillar: Sizing & CADR
Read time: 3 min

Read the full sizing page

Figures from the U.S. Environmental Protection Agency, retrieved 2026-08-30. This site shows no prices, by policy, the pin does not either.