Nordic Pure 20x25x5 Lennox Replacement MERV 14 Filter - 2 Pack

In this review the Nordic Pure 20x25x5 Lennox replacement MERV 14 filter is evaluated for homeowners and light commercial users who need higher particle capture without significant airflow loss. The bottom line: this 2 pack is best for anyone who measures their filter housing carefully and wants a filter rated to capture fine dust and allergens; its single biggest selling point is the MERV 14 performance in a traditional pleated media depth that fits many Lennox X6673/X6675 applications. The review examines fit, build, and real-world use based on customer feedback.

Key Features

• Actual size guidance: The filter lists a nominal 20 x 25 x 5 but the actual size is 19 3/4 x 24 3/4 x 4 3/8, so measuring the housing prevents fit surprises.
• Lennox replacement compatibility: Made to replace Lennox X6673 and X6675 media filters so it works where those models are specified.
• MERV 14 filtration: High-efficiency media equivalent to MPR 2800 captures fine dust, pollen, and many airborne particles for improved indoor air quality.
• Two-pack value: The 2 pack provides a straightforward replacement cadence for those changing filters seasonally or more often for health reasons.
• Made in the USA: Manufacturing origin can reassure buyers concerned about consistent build and materials.
• Depth variance note: The filter is built as a traditional 5 in style at an actual 4 3/8 in, important for housings with narrow tolerances.

Who It's For

This filter is intended for homeowners, renters, or small commercial sites that require stronger particle capture than basic fiberglass filters provide, particularly households with allergy or respiratory concerns who want better air quality. It is also suited to installations that originally use Lennox X6673 or X6675 media filters and where a reliable MERV 14 replacement is desired.

Shoppers who should look elsewhere include those with filter housings that absolutely require exact nominal depths without room for the 4 3/8 in actual measurement, and buyers who need disposable low-resistance filters designed solely for HVAC systems highly sensitive to pressure drop; measuring the slot and confirming clearance is recommended before purchase.

Pros & Cons

Pros

• High-efficiency MERV 14 media captures fine dust and allergens for noticeable air quality improvement.
• Designed to replace Lennox X6673/X6675 so it fits many compatible housings when actual size is confirmed.
• Customers report good value and effective dust capture without noticeable furnace strain in typical installations.

Cons

• The nominal versus actual size difference can confuse buyers; measuring is required to ensure proper fit.

Specifications

Our Verdict

The Nordic Pure 20x25x5 Lennox replacement MERV 14 2 pack is a sensible choice for customers who need stronger filtration and will confirm the actual 19 3/4 x 24 3/4 x 4 3/8 in measurements before ordering. It provides effective dust capture, good value, and compatibility with Lennox X6673/X6675 applications, making it a practical option for allergy-prone homes and many commercial settings.

Frequently Asked Questions

Will this filter fit my existing slot?
Measure your current filter or housing and compare to the actual size 19 3/4 x 24 3/4 x 4 3/8 in to ensure a proper fit.

Is the filtration level high enough for allergy sufferers?
Yes, the filter is MERV 14 (equivalent to MPR 2800), which captures fine particulates and is suitable for many allergy concerns.

How many filters are included?
This listing is a 2 pack, which covers multiple replacement cycles for routine maintenance.