25i Essential Filter

Verified to fit these purifiers

• Alen BreatheSmart 25i

  BreatheSmart 25i

  Exact Fit

  Compatibility evidence

  Exact replacement-filter compatibility confirmed using official manufacturer information.

  Last verified August 20, 2026

  • Blueair 411i Max Particle + Carbon Filter(opens in a new tab)— Manufacturer filter page
  • Blueair 511i Max Particle + Carbon Filter(opens in a new tab)— Manufacturer filter page
  • Alen BreatheSmart 25i HEPA Filter(opens in a new tab)— Manufacturer filter page

Where to buy

• Alen

  Alen 25i Essential Filter

  $44.00

  In stock at last check

  Checked August 22, 2026

  Buy at Alen(opens in a new tab)

Prices and availability are shown as last recorded and can change at any time. Confirm both on the seller's page before ordering.