Best Fiberglass Furnace Filters of 2026

Filterbuy Air Filter is a set of 16x20x1 replacement filters suitable for your furnace, air conditioner, heat pump, or HVAC system. The filters are made of MERV 8 synthetic media, which makes them comparable with MPR 600 & FPR 5. This feature enables the filters to capture up to 90% of airborne particles, such as dust and pollen, without affecting air flow. The electrostatically charged, pleated design captures more harmful particles and increases the lifespan of the product by three times that of fiberglass models. The industrial-grade beverage board frames with dual wire backings outperform the standard cardboard designs. All components of the Filterbuy Air Filter are made in the United States with recyclable materials.

The Aerostar MERV 8 Air Filter is designed to fit most standard HVAC systems, including popular brands like Carrier and Honeywell, giving you easy compatibility and a hassle-free replacement experience. With its MERV 8 rating, it effectively captures up to 90% of airborne particles like dust, pollen, and pet hair, helping you breathe cleaner air every day. The electrostatically charged pleated material traps more particles while still allowing smooth airflow, which means your HVAC system won’t have to work harder—saving you energy and maintaining performance. Plus, its sturdy frame and reinforced pleats last up to three months, so you get dependable filtration without frequent changes.

The Filtrete Air Filter is a 2-pack filter set designed to outperform fiberglass, washable, and non-electrostatic 3-month pleated 1 in. home air filters. It is perfect for your furnace, air conditioner, or HVAC system. The exclusive Filtrete Brand 3-in-1 technology from 3M is used to trap unwanted air particles while allowing cleaner air to flow through. The filter attracts and captures particles such as lint, pollen, dust, pet dander, smoke, and smog. With a 1000 MPR rating of MERV 11, the filter captures more microparticles such as pollen, pet dander, smoke, bacteria, and viruses from the air passing through it. The Filtrete Air Filter is a convenient and effective solution to keep your home's air clean and fresh.

Filterbuy Air Filter is a pack of two 20x25x4 replacement filters designed for your HVAC system. The MERV 8 synthetic media is electrostatically charged and pleated, capturing up to 90% of airborne particles like dust and pollen without affecting the air flow. The high-quality construction of the filter extends its lifespan by three times that of fiberglass models, and the industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs. All components are made in the United States with recyclable materials. The Filterbuy Air Filter is a reliable and durable choice for keeping your home clean and comfortable.

Filterbuy 20x25x5 Air Filter MERV 8 Dust Defense (2-Pack) is a replacement for your furnace, air conditioner, heat pump or HVAC system. With MERV 8 synthetic media, it can capture 90% of airborne particles without impacting air flow, protecting homes from dust, pollen, and more. The electrostatically charged, pleated filters are 100% US made, capturing more harmful particles and lasting 3x longer than fiberglass models. The filters also have industrial-grade beverage board (recyclable) frames with dual wire backings outperforming standard cardboard designs.

Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (2-Pack) is a compatible replacement filter for your whole house air filters. The MERV 11 synthetic media protects your home from pets, allergies, and more by trapping 95% of airborne particles without impacting air flow. The pleated filters are electrostatically charged, capturing more harmful particles and lasting 3x longer than fiberglass models. The industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs.

The Aerostar 16x25x1 MERV 8 Pleated Air Filter comes in a pack of 6 and is designed to filter microscopic particles such as lint, dust mites, spores, and pollen. The 100% synthetic electrostatic media ensures high efficiency with low air flow resistance, and it's simple to install for a cost-effective step towards a healthier home environment. The filter is comparable with MPR 600 & FPR 5 and is manufactured by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive. For best results, it's recommended to change filters every 60 to 90 days, with increased frequency to 30 days during peak summer and winter months.

Filterbuy 16x25x1 Air Filter MERV 8 Dust Defense (6-Pack) is a set of high-quality replacement air filters designed for furnaces, air conditioners, heat pumps, or HVAC systems. It features electrostatically charged, pleated design that captures more harmful particles, MERV 8 synthetic media that protects homes from dust, pollen, and more by trapping 90% of airborne particles without impacting air flow, and industrial-grade beverage board frames with dual wire backings that outperform standard cardboard designs. All components of this product are manufactured in the United States and designed with recyclable materials.

The Aerostar MERV 8 Filter is designed to fit most standard HVAC systems, including popular brands like Carrier and Honeywell, making installation simple and hassle-free for you. It effectively captures up to 90% of airborne particles such as dust, pollen, and pet hair, helping to keep your indoor air fresh and healthy. The filter's electrostatically charged pleated media traps more particles while still allowing smooth airflow, which helps your HVAC system run efficiently and saves energy. Plus, its sturdy frame and moisture-resistant backing ensure it lasts up to three months, so you can enjoy reliable performance without frequent replacements.

The Filterbuy MERV 11 Air Filter is designed to fit most furnaces, air conditioners, and heat pumps, making it easy for you to improve your home's air quality. Its MERV 11 rating means it effectively captures allergens, pet dander, and dust, providing cleaner air for your family. The filter uses electrostatic media with multiple pleats, which traps more tiny particles and lasts three times longer than standard fiberglass filters, so you won't need to replace it as often. Plus, its sturdy beverage board frame with wire backing offers better durability and can handle temperature changes, making installation and maintenance hassle-free.