AprilAire 401 Replacement Furnace Filter 16x25x6 - MERV 10

In this review the AprilAire 401 replacement furnace filter is presented as a practical, OEM-quality option for homeowners who use AprilAire or Space-Gard 2400 whole-house air purifiers. The bottom line: this MERV 10, 16x25x6 filter is best for people who want a straightforward annual replacement that removes common airborne particles like dust, pollen, mold spores and pet dander while protecting HVAC equipment. It is made in Wisconsin, USA, fits the Model 2400 purifiers, and offers up to 12 months of service, so those prioritizing convenience and reliable filtration will appreciate it.

Key Features

• Genuine replacement: Designed and manufactured by AprilAire to match original equipment fit and function for Model 2400 purifiers, reducing compatibility guesswork.
• MERV 10 performance: Captures dust, pollen, mold spores, bacteria and pet dander to improve indoor air quality and help protect household respiratory health.
• Up to 12 month life: Annual replacement simplifies maintenance and lowers the frequency of filter swaps compared with higher-maintenance alternatives.
• HVAC protection: Prevents buildup of airborne particles in your system, which can support better energy efficiency and potentially extend equipment life.
• Made in the USA: Manufactured in Wisconsin, offering assurance of origin and consistent build quality for consumers seeking domestic production.

Who It's For

The AprilAire 401 is ideal for owners of AprilAire 2400 and Space-Gard 2400 whole-house purifiers who want a direct OEM replacement without modifying their system. It suits homeowners who prefer a low-maintenance, annual service rhythm and who need effective removal of common particulates like dust, pollen and pet dander.

It is less appropriate for households needing medical-grade filtration or finer particle capture; those seeking substantially higher filtration efficiency should consider upgrade options such as the AprilAire 413 upgrade kit or different MERV ratings. Also, customers who require heavy-duty tear-resistant media may want to inspect the pleat construction before purchase.

Pros & Cons

Pros

• OEM fit and compatibility with AprilAire and Space-Gard 2400 models for straightforward installation.
• MERV 10 rating provides effective capture of common airborne particles to improve indoor air quality.
• Long service life of up to 12 months reduces maintenance frequency and saves time.

Cons

• Some users report rip resistance issues with the pleats during installation, so care is needed when handling.

Specifications

Our Verdict

The AprilAire 401 is a sensible, value-oriented replacement filter for owners of AprilAire and Space-Gard 2400 systems who want an OEM match and dependable MERV 10 filtration for common allergens and dust. It delivers long service life and system protection at a reasonable cost, though those needing finer filtration or tougher media should consider the upgrade kit or higher-rated filters.

Frequently Asked Questions

How often should this filter be replaced?
Annual replacement is recommended; the filter is designed for up to 12 months of service under typical conditions.

Will this filter fit my purifier?
It is made to fit AprilAire Model 2400 and Space-Gard 2400 whole-house air purifiers; confirm your model before purchase.

Does this filter remove allergens?
Yes, the MERV 10 media captures dust, pollen, mold spores and pet dander to reduce airborne allergens in the home.