Filtrete 20x20x4 AC Furnace Filter – MPR 1550, MERV 12, 2-Pack

Filtrete 20x20x4 MPR 1550 Air Filter, made by 3M, helps capture unwanted particles and allergens from your household air to contribute to a clean home environment. Designed with exclusive Filtrete 3-in-1 technology, including a high MPR 1550 and MERV 12 rating, your AC filter will help pull and capture countless microparticles – such as pet dander, smoke and smog – while letting cleaner air flow through. This air filter captures up to 50% of small particles (0.3 to 1 micron) in standard testing, such as particles that can carry common irritants, while also catching larger particles like lint, pollen and household dust. The Filtrete filter is CERTIFIED Asthma & Allergy Friendly, signaling a commitment to reducing common household irritants without claiming specific health outcomes. The filter is designed for 4-inch filter slots and ships as a practical 2-pack to support ongoing use in compatible furnaces, air conditioners, or HVAC systems. The actual size is 19.88 x 19.88 x 4.31 in, aligning with many 20x20x4 references and ensuring a reliable fit when installed correctly. For optimal performance, consider scheduling regular filter changes, typically once per year in common setups.

What makes Filtrete 3-in-1 technology stand out is its ability to actively pull in, trap, and balance airflow in one streamlined design. The high MPR 1550 paired with a MERV 12 rating emphasizes practical filtration across a range of particle sizes, from everyday dust to more persistent irritants like smoke. This combination supports a steady flow of clean air through your HVAC system while helping reduce the buildup of visible dust on furniture and surfaces.

What you may notice in your home includes a potential drop in airborne dust near vents and a smoother, more consistent airflow through your filters. The filter’s design is also compatible with Honeywell-brand media air cleaners, making replacement straightforward for many existing systems. The Asthma & Allergy Friendly certification reinforces that the product is aligned with consumer preferences for lower-irritant filtration, without implying medical outcomes.

How to get the most from this Filtrete filter: ensure you install the exact size 19.88 x 19.88 x 4.31 inches in compatible 4-inch slots; use the Filtrete Smart App to set 90-, 180-, or 365-day reminders for replacement; and plan a yearly replacement in typical home usage to maintain filtration performance. If you’re upgrading from a lower-efficiency filter or seeking an option that combines strong particle capture with steady airflow, this 2-pack provides a practical option to consider. Remember that real-world results depend on your home environment, system type, and maintenance habits.

Key benefits at a glance

• 3-in-1 Filtrete technology combines particle pull, trap, and airflow optimization.
• High filtration with MPR 1550 and MERV 12 to handle a broad range of irritants.
• CERTIFIED Asthma & Allergy Friendly for households seeking lower irritants in indoor air.
• Exact size of 19.88 x 19.88 x 4.31 inches; shipped as a 2-pack for convenience.
• Designed to fit 4-inch filter slots in compatible furnaces, air conditioners, or HVAC systems.
• Smart reminders via the Filtrete App help you stay on schedule.

What you may notice in your home

• Cleaner-feeling air and fewer visible dust particles around living spaces.
• Consistent airflow through your HVAC system with less abrupt filter resistance.
• Easy replacement in systems compatible with Honeywell-brand media air cleaners.

Is this right for you? If you’re looking for a reliable, electrostatic filter with strong particle capture that supports everyday air quality in homes with pets, smoke exposure, or common indoor irritants, this Filtrete 2-pack offers a practical option without promising guaranteed outcomes.