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Clean-air shop · 8 picks

Genuine air purifier replacement filters

A clogged filter can halve the clean air a purifier delivers.

These are the makers' own replacements for every purifier in the shop, with the models each fits and how often to change it.

8 filters at a glance

Our picks

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Levoit Core 300-RF Original FilterCore 300 & 300S

Levoit

Core 300-RF Original Filter

Levoit's own three-stage filter for the Core 300 and Core 300S: a fine pre-filter, H13 True HEPA and activated carbon in one cylinder.

  • Fits Core 300 and Core 300S
  • Pre-filter, H13 HEPA, carbon

Copies sell under the same part number. Levoit's figures are for its own filter.

$29.99at levoit.com

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Levoit Core 400S-RF Original FilterCore 400S

Levoit

Core 400S-RF Original Filter

Levoit's own three-stage filter for the Core 400S: pre-filter, H13 True HEPA and activated carbon.

  • Fits the Core 400S
  • Pre-filter, H13 HEPA, carbon

Copies sell under the same part number. Levoit's figures are for its own filter.

$49.99at levoit.com

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Levoit Core 600S-RF Original FilterCore 600S

Levoit

Core 600S-RF Original Filter

Levoit's own filter for the Core 600S. Levoit says the purifier's filter-life indicator works only with its genuine filters.

  • Fits the Core 600S
  • Lasts 6–12 months (Levoit)

Levoit says the filter-life indicator works only with its genuine filters.

$59.99at levoit.com

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Winix Filter S (1712-0096-00)C545

Winix

Filter S (1712-0096-00)

Winix's own year-long filter set for the C545: one True HEPA filter and four carbon pre-filters.

  • Fits the Winix C545
  • 1 HEPA + 4 carbon pre-filters

Copies sell under the same part number. Winix's figures are for its own filter.

$49.99at winixamerica.com

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Buying guide

What to look for

01

Match the model exactly

Each purifier takes its own filter, and similar names don't mean they fit. Check the model on the purifier's label against the 'Fits' line.

02

Genuine over copies

Copies sell under the same part numbers. The makers' rated clean air, and some filter-life sensors, are for their own filters.

03

Change it on time

Most last 6–12 months, sooner through smoke or a smoggy winter. A gray filter and a stuffier room are the signs.

Questions

How often should I replace my air purifier filter?
Most HEPA filters last 6–12 months by the makers' guidance; carbon pre-filters, about every 3 months. Heavy smoke or smog shortens both.
Are cheaper third-party filters OK?
Some fit, but their filtration isn't verified. The makers' CADR ratings are for their own filters, and some purifiers' filter-life sensors expect them.
Can I wash a HEPA filter?
No. Washing ruins a HEPA filter's fibres. Only the pre-filter, where a purifier has a washable one, can be rinsed.

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