2- to 5-inch pleated · Nordic Pure

Nordic Pure Replacement Filter for Honeywell 10

Furnace and AC filter · MERV 10

Updated October 2026

Quick verdict

A sensible choice for everyday dust and equipment protection.

Strength
MERV 10.
Trade-off
Measure your slot: nominal and actual sizes differ.
Right buyer
Everyday dust and equipment protection.
MERV rating
10
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Why it matters

The Nordic Pure Replacement Filter for Honeywell 10 is a pleated furnace and air conditioner filter rated MERV 10.

MERV 10 sits between the standard and allergy grades, catching more of the 1 to 3 micron range (mold spores, fine dust) than MERV 8.

Deep pleated filters hold several times the media of a 1-inch filter, so they run with less resistance and last longer.

As general guidance, check a 1-inch filter monthly and change it every one to three months; deeper 4- and 5-inch filters usually last six to twelve months.

This listing is the 20x25x5 size; order by the size printed on your old filter's frame.

The Nordic Pure listing names 2 filters per box.

Compared with the Nordic Pure 4-Inch Pleated MERV 12 Air Filter: MERV rating 10 here vs 12.

Who it's for, and who should skip it

Good fit if

  • Everyday dust and equipment protection
  • Homes that change filters on schedule

Look elsewhere if

  • Smoke or fine-particle control

Pros and cons

Pros

  • MERV 10

Cons

  • Measure your slot: nominal and actual sizes differ

Limitations to weigh

  • Specifications are the maker's or seller's own figures; check fit against your equipment's model number and the actual size.

Specifications

The bracket shows where each figure comes from.

Model number20x25x5 HRetailer
MERV rating10Retailer

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Final verdict

A sensible choice for everyday dust and equipment protection. Confirm the model it fits before ordering.

Where to buy

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

Is MERV 10 right for my home?
MERV 10 sits between the standard and allergy grades, catching more of the 1 to 3 micron range (mold spores, fine dust) than MERV 8. If your system is old or the filter slot is a 1-inch return grille, watch for whistling or a filter that bows; those are signs to step down a grade.