● Air Purifiers · Review

Honeywell HPA100 True HEPA Air Purifier

97% capture. Keep in mind that ~100 CADR limits honest coverage to about 155 sq ft, too small for anything beyond a bedroom.

✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 3 min read

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Honeywell HPA100 True HEPA Air Purifier

Honeywell HPA100 True HEPA Air Purifier

Honeywell

97% capture. Keep in mind that ~100 CADR limits honest coverage to about 155 sq ft, too small for anything beyond a bedroom.

  • ~100 smoke CADR covers ~155 sq ft
  • True HEPA at 99.97% capture
  • Turbo Clean rapid-knockdown setting
  • Exposed pleated filter, no plastic cage
  • 3 fan speeds

Pros

  • Smaller, cheaper sibling of the HPA300 with the same true HEPA rating and exposed-filter efficiency
  • Right-sized specifically for bedrooms rather than being an oversized unit run on its lowest, least efficient speed
  • Filters share compatibility with other Honeywell HPA-series bodies, simplifying replacement sourcing
  • 12,800 ratings support solid reliability at this smaller size class
  • Genuinely inexpensive for a documented true HEPA unit

Cons

  • ~100 CADR limits honest coverage to about 155 sq ft, too small for anything beyond a bedroom
  • No washable pre-filter, so debris loads directly onto the HEPA media
  • No auto mode or sensor, fan speed is manual
  • Louder at top speed relative to its coverage than the Levoit Core 300
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