Pin kit · Air Purifier Sizing

Why "Covers 1,500 sq ft" Means Very Little

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 600 cfm, the minimum clean air delivery rate Beyond that, no EPA minimum exists

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The vertical pin is served at a stable URL (roomandfilter.com/pin/cadr-vs-coverage-area/image) so the media travels with the pin wherever it is saved.

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What the pin points at

Coverage claims are not standardised. The published minimum CADR is. See why the room-size row beats the box headline every time you compare.

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.