AirPurete AP-LX20255 Air Filter Replacement 20x25x5 - MERV 11

In this review the AirPurete AP-LX20255 air filter is evaluated as a straightforward, high-capacity replacement filter for many common furnace and HVAC models. It is aimed at homeowners who need a dependable, easy-to-install disposable filter that balances particle capture with airflow. The single biggest reason to consider this filter is its MERV 11 rating, which offers higher-efficiency filtration comparable to MPR 1000-1200 and FPR 7 while still fitting the nominal 20x25x5 size used by many Lennox, Honeywell and Carrier systems.

Key Features

• Compatibility: Designed to replace Lennox X6673 and several Honeywell and Carrier models, so it fits in many existing 20x25x5 filter slots without modification.
• Actual size accuracy: The listed actual dimensions of 19.75 in x 24.75 in x 4.38 in ensure a snug, proper fit in housings that accept 20x25x5 nominal filters.
• MERV 11 filtration: Captures a wide range of particles such as pollen, dust and lint, protecting home air quality by trapping about 95% of airborne particles in the target range without noticeably restricting airflow in typical systems.
• Pack quantity: Sold as a pack of 2 which makes routine replacement convenient and gives immediate spare capacity for a standard two-month rotation in many households.
• High capacity media: The thicker, high-capacity media helps extend service life compared with thin furnace filters, reducing replacement frequency in moderate dust conditions.

Who It's For

This filter is best for homeowners with forced-air furnaces or HVAC systems that accept a 20x25x5 nominal filter who want improved particle removal beyond basic fiberglass filters. It is particularly useful for those concerned about seasonal pollen, household dust and lint and who prefer an easy drop-in replacement for Lennox X6673, Honeywell FC100A1037 or equivalent Carrier and Trion part numbers.

It is less suitable for systems that explicitly require lower or higher MERV ratings for warranty or performance reasons, or for users who need washable or permanent electrostatic filters. Also, if tight installation tolerances are critical, buyers should check their filter slot dimensions against the provided actual size.

Pros & Cons

Pros

• Good balance of filtration and airflow thanks to the MERV 11 media, improving indoor air quality for most homes.
• Wide compatibility with common OEM part numbers makes it an easy replacement for several Lennox, Honeywell and Carrier models.
• Actual measured dimensions reduce the chance of fit issues in standard 20x25x5 housings.
• Sold as a two-pack which provides immediate spare and value for routine maintenance.

Cons

• Some users reported the filtration media can be a bit loose at the edges, which may affect handling during installation.
• Not intended as a permanent or washable filter; it is a disposable replacement that will require periodic replacement to maintain performance.

Specifications

Brand	AirPurete
Model / Replacement	Replacement for Lennox X6673, Honeywell FC100A1037, Carrier equivalents
Nominal Size	20x25x5
Actual Size	19.75 in x 24.75 in x 4.38 in
MERV Rating	MERV 11 (comparable to MPR 1000-1200, FPR 7)
Pack Quantity	Pack of 2

Our Verdict

The AirPurete AP-LX20255 is a practical, value-minded replacement for homeowners who need stronger filtration than basic fiberglass pads without sacrificing airflow. Its MERV 11 media and accurate actual dimensions make it a sensible choice for owners of compatible Lennox, Honeywell and Carrier systems, and the two-pack provides convenient spare capacity at a reasonable price. Those needing reusable filters or specialized high-MERV filtration should look elsewhere.

Frequently Asked Questions

Will this fit a nominal 20x25x5 slot?
Yes, the actual size is 19.75 in x 24.75 in x 4.38 in, which fits standard 20x25x5 housings in most residential systems.

How does MERV 11 compare to other ratings?
MERV 11 captures finer particles than basic filters and is comparable to MPR 1000-1200 and FPR 7, offering improved pollen and dust control without excessive airflow restriction.

How often should these filters be replaced?
Replacement frequency depends on use and indoor air conditions, but in many homes a two- to three-month rotation is common; the two-pack helps cover routine changes.