Nordic Pure 20x20x5 MERV 15 Plus Carbon Furnace Filter - Low Odor

In this review the Nordic Pure 20x20x5 MERV 15 Plus Carbon replacement filter is evaluated for homeowners and light commercial users who want high-efficiency particle removal plus odor control. The bottom line: this filter is for anyone who needs superior air filtration and built-in odor reduction in a nominal 20 x 20 x 5 format, provided they check the actual dimensions before buying. Our review highlights the strong filtration rating, the activated carbon layer for smells, and the importance of measuring the existing filter opening since the actual size differs from the nominal size.

Key Features

• MERV 15+ filtration: Captures a wide range of airborne particulates for noticeably improved indoor air quality in homes and small commercial spaces.
• Actual size guidance: Measured actual size 19 5/8 x 19 7/8 x 4 3/8 in so customers can confirm fit before installing and avoid returns.
• Pleated plus carbon design: Electrostatic pleats combined with an activated charcoal panel reduce common household odors while trapping fine dust.
• OEM compatibility: Designed to replace Honeywell 20x20x4 style filters and MPR-rated units with a 4 3/8 in actual depth for easy swap-in performance.
• Made in the USA: Domestic manufacture gives consistent build quality and material control compared with unknown-sourced alternatives.

Who It's For

This filter is best for homeowners with allergies, pet dander, or smell concerns who use furnaces or air handlers sized for nominal 20 x 20 x 5 filters and who are comfortable measuring the existing filter slot. It also suits small commercial spaces that need higher-efficiency filtration and some VOC or odor reduction without adding a separate odor-absorbing device.

Those who should look elsewhere are people who cannot accommodate the actual 4 3/8 in depth in their return grille or narrow filter slots; a different nominal/actual depth or a custom size will be necessary. Also, customers seeking washable or reusable filters will need a different product type.

Pros & Cons

Pros

• High-efficiency MERV 15+ media provides strong particle capture for better air quality.
• Integrated activated carbon layer helps remove odors and common VOCs from indoor air.
• Easy to install as an OEM-style replacement for many Honeywell 20x20x4 units.
• Made in the USA with consistent build quality that users describe as durable and well-made.

Cons

• Actual dimensions are smaller than the nominal size, so careful measurement is required to ensure a proper fit.
• The actual depth of 4 3/8 in may not suit systems expecting a true 5 in thick filter.

Specifications

Our Verdict

The Nordic Pure 20x20x5 MERV 15 Plus Carbon filter is a practical, value-oriented choice for anyone needing high-efficiency particle removal and basic odor control in a nominal 20 x 20 x 5 form factor. It represents good value and build quality for replacement use, provided buyers verify the actual size of 19 5/8 x 19 7/8 x 4 3/8 in to ensure a correct fit.

Frequently Asked Questions

Is this filter the same as a 5 in thick filter?
It is sold as a 20x20x5 nominal filter but the actual depth is 4 3/8 in, which matches many traditional 5 filters; measure the slot before purchasing.

Will this remove household odors?
Yes, the integrated activated carbon panel helps reduce common odors and some VOCs alongside the pleated MERV 15 media.

Can it replace Honeywell 20x20x4 filters?
Yes, it is designed to replace Honeywell 20x20x4 style filters and units with an actual depth of about 4 3/8 in.