Aprilaire 401 Replacement Filter for 2400/Space-Gard 2400 – MERV 10, 16x25x6

Overview

Keep your home's air clean with the Aprilaire 401 replacement filter for the 2400 series purifiers. This MERV 10 filtration captures common airborne particles as air moves through the filter, including dust, pollen, mold spores, bacteria, and pet dander. It’s designed to help your household breathe easier without making promises, focusing on possibilities rather than guarantees.

Designed for compatibility with Aprilaire 2400 and Space-Gard 2400 whole-house air purifiers, the filter features a nominal size of 16 x 25 x 6 inches. Genuine Aprilaire packaging also includes illustrated replacement instructions to help you install it correctly. Made in the USA, this filter emphasizes reliability and a straightforward maintenance routine.

Key benefits

• Removes common indoor particles such as dust, pollen, mold spores, bacteria, and pet dander as air passes the filter.
• Supports HVAC efficiency by reducing dust buildup, which can help lower energy use and may extend equipment life.
• Six-inch depth provides more surface area than typical 1-inch filters, contributing to longer potential life—up to 12 months in typical use.
• Consider the optional 1413 Upgrade Kit to swap in a higher-performance 413 filter and a new frame, simplifying installation.
• Nominal size 16 x 25 x 6 inches; fits Aprilaire 2400 and Space-Gard 2400 models.

Real-life uses

• Allergy season: fewer irritants circulating in living spaces may feel noticeable during daily activities.
• Homes with pets: potential reduction in pet dander within common areas.
• Renovated or dusty environments: helps minimize dust recirculation through the HVAC system.
• Busy households: a longer interval between replacements can save time and effort when scheduling maintenance.

Maintenance and upgrades

Note: MERV 10 indicates the filtration level on this media. This filter is compatible with AprilAire 2400 and Space-Gard 2400 purifiers. If you want higher performance, the 1413 Upgrade Kit can replace the 401 with a 413 filter and a new frame, eliminating pleat spacers for a different setup.

Made in the USA, this genuine Aprilaire replacement filter ships with illustrated packaging that guides you through the replacement process. It’s designed to be part of a maintenance routine that supports your home’s air filtration strategy without overpromising results.