Filtrete 18x24x1 Air Filter, MERV 11, MPR 1000 – 4 Pack (Actual Size 17.68 x 23.68 x 0.81 in)

Upgrade your home's air with Filtrete 18x24x1 filters

Designed to fit standard HVAC systems, this 4-pack uses advanced electrostatic filtration to attract and trap a wide range of airborne particles. The actual size is 17.68 x 23.68 x 0.81 inches, ensuring a precise fit in most 18x24x1 housings. With every pass, your living space benefits from cleaner air and steadier airflow.

How filtration works

Filtrete filters combine charged fibers that act like tiny magnets. Air carries particles both positively and negatively charged; as air moves through the filter, these particles are drawn to and captured by the fibers. This electrostatic action helps trap small irritants that non-electrostatic filters may miss, while maintaining good airflow through your system.

• Captures large and small particles such as dust, pollen, dust-mite debris, lint, and mold spores.
• Also targets pet dander, smoke, smog, and bacteria for a cleaner ambient feel.
• 1000 Microparticle Performance Rating (MPR 1000) signals broad particle capture across sizes.

Why it matters for your home and HVAC

Cleaner air can accompany a smoother hvac operation, as less dirt and debris reach the equipment. This filtration helps reduce the strain on motors and can contribute to steadier airflow between cycles. Replace every 90 days for optimal performance, with the actual lifespan influenced by household conditions such as pets, smoking, or heavy dust activity.

• Helps keep air moving efficiently and may support lower energy use over time.
• 4-pack offers ready replacements across seasons, reducing maintenance downtime.

Certifications, convenience, and trust

This Filtrete filter is certified asthma and allergy-friendly, offering reassurance for spaces where sensitive occupants reside. It is built on Filtrete 3-in-1 technology designed to pull in and trap a wide range of particles while allowing cleaner air to flow through. For added convenience, use the Filtrete Smart App to set replacement reminders and track when to swap filters. Filtrete has a long-standing presence in residential air filtration, reinforcing a sense of reliability for many homes.

Real-life use cases

• Pet households seeking less dander and odors in living rooms and bedrooms.
• Families with allergy-prone members aiming for a cleaner breathing space.
• Homes with smokers or frequent cooking that accumulate fine particulates.

What you get and how to use it

Each kit includes four 18x24x1 filters designed for furnaces and air conditioners. To maintain performance, check your system manufacturer guidance and replace every 90 days or sooner if airflow seems reduced. The actual size ensures compatibility with most 18x24x1 frames, helping you install with confidence.

With Filtrete, you can expect a practical filtration solution that supports cleaner air and reliable airflow, without promising specific outcomes. It’s a thoughtful option for improving daily comfort and maintaining HVAC upkeep across a busy home.