Nordic Pure 20x20x5 MERV 14 Plus Carbon Furnace Filter - Odor Control

Our review of the Nordic Pure 20x20x5 MERV 14 Plus Carbon filter is written for homeowners and renters who want a higher-efficiency replacement for common 20 x 20 furnace filters and need basic odor control. The bottom line: this single-pack filter offers high-efficiency particle capture and a flat charcoal panel for smells, while fitting systems that accept a true 4 3/8 in depth. It is best for people who check actual filter dimensions and want a MERV 14 level of protection without OEM pricing.

Key Features

• Actual size accuracy: The filter lists both nominal 20 x 20 x 5 and an actual size of 19 5/8 x 19 7/8 x 4 3/8 so buyers can measure for a correct fit before ordering.
• MERV 14 filtration: Captures a wide range of airborne particulates and is equivalent to MPR 2800, offering stronger filtration than standard disposable filters.
• Plus carbon layer: A flat panel infused with activated charcoal helps reduce common household odors and VOCs for fresher indoor air.
• Electrostatic media: Pleated synthetic media carries an electrostatic charge to attract and hold more dust, pollen and fine particles.
• OEM replacement fit: Designed to replace Honeywell 20x20x4 and similar filters that have an actual depth close to 4 3/8 in, making it a practical replacement in many HVAC systems.

Who It's For

This filter is a good match for homeowners or renters who need better-than-basic filtration and occasional odor control, such as those sensitive to dust, pet dander or cooking smells. It is particularly useful for people who know to measure the existing filter and confirm the actual size before buying.

It is not the best choice for systems that require a true 5 in depth or for users who cannot verify clearance for a 4 3/8 in thick filter; customers who need multi-pack value purchases or washable permanent filters should look elsewhere.

Pros & Cons

Pros

• High-efficiency MERV 14 media captures finer particles than standard filters.
• Carbon panel reduces odors and some VOCs for improved indoor air comfort.
• Well-built pleated design that customers report is easy to install and fits common housings when measured correctly.

Cons

• Actual dimensions are smaller than the nominal size, so buyers must measure their filter slot to ensure compatibility.

Specifications

Brand	Nordic Pure
Nominal size	20 x 20 x 5 in H
Actual size	19 5/8 x 19 7/8 x 4 3/8 in (19.63 x 19.88 x 4.38)
Filtration rating	MERV 14 (equivalent to MPR 2800)
Special feature	Plus Carbon flat panel with activated charcoal
Replaces	Honeywell 20x20x4 and similar 4 3/8 in actual depth filters
Made in	USA

Our Verdict

The Nordic Pure 20x20x5 MERV 14 Plus Carbon single-pack is a solid, value-conscious replacement for users who need upgraded filtration and odor reduction and who take the time to confirm the actual size. It delivers stronger particle capture and noticeable odor mitigation versus basic filters, making it a practical choice for allergy-aware households and kitchens that generate smells.

Frequently Asked Questions

Will this fit a slot labeled 20 x 20 x 5?
Only if you measure the slot and confirm it accepts an actual filter size near 19 5/8 x 19 7/8 x 4 3/8 in, since nominal and actual sizes differ.

Does the carbon layer remove strong chemical odors?
The activated charcoal layer helps reduce common household odors and some VOCs, but heavy chemical fumes may require specialized filtration or ventilation.

How often should it be replaced?
Replacement frequency depends on use and conditions; check the HVAC system and replace when airflow is noticeably reduced or according to your system recommendations.