AprilAire 401 MERV 10 Replacement Filter for Model 2400

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Product guide

AprilAire 401 MERV 10 Replacement Filter for Model 2400

Model: The AprilAire 401 is a replacement media filter for AprilAire and Space-Gard 2400 whole-house air purifiers. Its MERV 10 rating and nominal 16 x 25 x 6-inch size suit buyers replacing the original media, but confirm compatibility and fit dimensions before ordering.

At a glance

Listed for AprilAire 2400 and Space-Gard 2400 air purifiers.
The manufacturer says the MERV 10 media captures particles including dust, pollen, mold spores, bacteria, and pet dander.
Manufacturer guidance describes annual replacement, while another listing statement says media life can range from one to two years depending on system operation.
The stated nominal size is an industry sizing reference, not the actual dimensions.

Price

$34.99Save 20%

Reference price: ~~$43.99~~

Price checked: Nov 14, 2026

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Often bought together

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AprilAire 201 Replacement Filter for AprilAire or Space-Gard 2200 or 2250 Whole-House Air Purifiers - MERV 10, 20x25x6 Air Filter (Pack of 1)

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Pros and cons

Pros

Designed as replacement media for the AprilAire and Space-Gard 2400 models.
MERV 10 rating and listed particle types make its filtration purpose clear.
A single-filter pack suits a one-at-a-time replacement purchase.

Cons

The filter media is reported by some customers as fragile and prone to tearing during installation.
Customer feedback is mixed about build quality.

Technical specifications

12 specifications

Identity
Brand	Aprilaire
Model	401

Filtration and compatibility
MERV rating	10
Compatible purifier models	AprilAire 2400
Compatible HVAC systems	residential
Construction	Pleated
Shape	Rectangular
Common application	Allergen Reduction

Dimensions and installation
Dimensions listed	7.47"L x 28"W x 17"Th
Nominal filter size	16 x 25 x 6 inches
Weight listed	16 ounces

Materials and protection
Material listed	Bonded Glass Fiber

What to know before buying

Listing details to confirm

The listing gives dimensions of 7.47"L x 28"W x 17"Th but separately calls 16 x 25 x 6 inches the nominal size, which it says is not the actual size. Filter life is also inconsistent: one claim advises annual replacement or up to 12 months, while another says one to two years depending on system operation. Confirm the suitable model and replacement interval for your setup.

What’s in the box

Included

1 401 filter media

Who is it for?

A good fit for

Owners of AprilAire or Space-Gard 2400 purifiers seeking the listed 401 replacement media.
Buyers who want a single MERV 10 filter with bonded glass fiber construction.

Less suited to

Owners of purifier models other than the listed 2400 models unless compatibility is confirmed.
Buyers seeking the separately sold 1413 upgrade kit or its 413 filter media.

AprilAire 401 MERV 10 Replacement Filter for Model 2400 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 4,374 ratings

5 stars82%82%
4 stars11%11%
3 stars3%3%
2 stars1%1%
1 star3%3%

Customer feedback highlights easy installation, reported fit with compatible air conditioners, and perceived dust reduction. Reports also raise concerns about flimsy construction and media tearing during installation. These comments matter when handling the pleated filter, even though the listing specifies bonded glass fiber media and MERV 10 filtration. Customer reports of replacement intervals vary, so they do not settle the listing's conflicting service-life guidance.

Positive themes

Customers report easy installation and a good fit in compatible systems.
Some customers say it works well with their air conditioners and reduces household dust.

Negative themes

Some customers describe the filter as fragile and say it can tear during installation.
Build quality receives mixed feedback, with some customers describing it as cheaply made.

Mixed feedback

Customer-reported filter life varies, and feedback does not resolve the listing's differing replacement interval claims.

Frequently asked questions

Which purifiers is the AprilAire 401 listed for?

The listing identifies AprilAire 2400 and Space-Gard 2400 whole-house air purifiers. Check the model label on your purifier before ordering.

What is the filter's actual size?

The product is described as nominally 16 x 25 x 6 inches, and the listing states that nominal size is not the actual size. A separate dimensions field gives 7.47"L x 28"W x 17"Th, so verify fit with your purifier and existing filter.

How often should the filter be replaced?

The listing is inconsistent. It recommends annual replacement and also says up to 12 months, while another statement gives a one-to-two-year range depending on system operation. Follow the guidance applicable to your equipment and use.

Does the filter include the 1413 upgrade frame?

No such inclusion is stated. The listing describes the AprilAire 1413 upgrade kit as sold separately.