Aprilaire 401 Replacement Filter for 2400 | MERV 10, 16x25x6

Breathable, cleaner air starts with a reliable filter. The Aprilaire 401 replacement filter is designed for Aprilaire and Space-Gard Air Cleaner Model 2400, delivering dependable MERV 10 filtration that captures dust, pollen, mold spores, bacteria, and pet dander as air passes through the pleated media. This upgrade is built to support a healthier home environment while remaining easy to install in compatible units, so you can maintain steady airflow without guesswork.

In everyday use, you may notice less dust on surfaces and a steadier indoor climate as the system pulls more contaminants from the air. The filter’s six-inch depth provides more filtration area than standard thinner options, which can help sustain filtration efficiency even as dust levels rise in busy households or during allergy seasons. While results vary, many homes experience a more consistently clean feel and crisper air after installation.

Performance you can rely on

• MERV 10 rating captures common indoor pollutants such as dust, pollen, mold spores, bacteria, and pet dander.
• Designed for Aprilaire Model 2400 and Space-Gard 2400 purifiers with a nominal size of 16 x 25 x 6 inches.

Up to 12 months of filter life helps align maintenance with annual care plans, saving time and effort when it’s time to replace. The 6-inch depth creates more filter area, which can support consistent airflow and potential energy efficiency over the year.

Real-life use and upgrade options

During pollen spikes or pet ownership, a higher-capacity filter can help reduce airborne particles in the living space. If you’re seeking an even higher level of filtration, you can explore the Aprilaire 1413 Upgrade Kit, which replaces the 401 with a higher-performance 413 filter and a new frame system to simplify installation and optimize performance.

• Upgrade path available to a higher-efficiency 413 filter with a fresh frame for enhanced filtration.
• Illustrated packaging includes replacement instructions to guide a confident DIY change.

Quality and American craftsmanship are part of the design. This genuine Aprilaire part is made in the USA and is intended to integrate smoothly with your home heating and air conditioning setup, supporting routine maintenance and consistent filtration as part of a broader indoor air quality routine.