Nordic Pure 20x25x5 (Actual 19 7/8 x 24 7/8 x 4 3/8) MERV 10 Carbon

In this review the Nordic Pure 20x25x5 replacement air filter is evaluated for homeowners and renters who need a highfiltration, odorreducing HVAC filter that fits systems calling for a nominal 20 x 25 x 5. The bottom line: this single pack delivers MERV 10 particle filtration combined with an activated carbon layer for added odor and VOC control, and it is intended for users who will measure their filter openings and accept an actual depth of 4 3/8 in rather than a nominal 5 in. It is a practical, economical option for routine seasonal replacement when proper fit is confirmed.

Key Features

• Actual size guidance: The filter lists the precise actual dimensions so buyers can measure and ensure a correct fit before purchase, reducing returns and wasted trips.
• MERV 10 filtration: The pleated media captures common household dust, pet dander and pollen while keeping airflow suitable for typical residential furnaces and air handlers.
• Carbon layer for odors: A bonded carbon layer adsorbs odorous gases and some VOCs, helping reduce smells from cooking, pets or household cleaners.
• Replaces common Honeywell sizes: Designed as a replacement for Honeywell 20x25x4 and similar filters with a 4 3/8 in actual depth, making it a direct swap for compatible units.
• Made in the USA: Domestic manufacturing may appeal to buyers who prefer locally made HVAC consumables and consistent build quality.

Who It's For

The filter is best for homeowners or renters who know their filter slot dimensions and need improved particle filtration plus basic odor control without upgrading to a thicker custom filter. It is also appropriate for those converting electronic air cleaners or swapping standard foam or flat filters for a pleated media option.

It is not ideal for systems that require an exact nominal 20x25x5 with a full 5 in depth; several customers report the actual length can be slightly long for some 20x25x5 housings, so anyone with a very tight or nonstandard frame should measure and consider an alternate depth or consult the furnace manual.

Pros & Cons

Pros

• Good balance of particle filtration and airflow with an equivalent MPR of about 1000 due to its MERV 10 rating.
• Activated carbon layer helps control household odors and some VOCs.
• Clear actual dimensions listed make it straightforward to check fit before buying.
• Made in the USA, with many customers noting solid build quality and ease of installation.

Cons

• Actual depth of 4 3/8 in can cause length or fit issues in some 20x25x5 slots; measure first.
• Single pack may not be the most costefficient option for those who prefer multipacks.

Specifications

Our Verdict

The Nordic Pure 20x25x5 actual 19 7/8 x 24 7/8 x 4 3/8 filter is a solid pick for those who measure first and want a MERV 10 pleated filter with added carbon for odors. It offers good build quality, easy installation and value versus higherend specialty filters, but buyers should confirm the 4 3/8 in actual depth will fit their cabinet before ordering.

Frequently Asked Questions

Will this fit my 20x25x5 slot?
Measure the filter opening and compare to the listed actual size 19 7/8 x 24 7/8 x 4 3/8 in to ensure a proper fit.

Does the carbon remove all household odors?
The activated carbon layer adsorbs many odorous gases and some VOCs but is not a guarantee for complete odor removal in every situation.

How does it compare to higher MERV filters?
MERV 10 balances filtration and airflow for most homes; higher MERV filters capture smaller particles but may restrict airflow in some systems.