Best Synthetic 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.

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.

The Nordic Pure MERV 12 Pleated Air Filters come in a 2 pack, and the nominal size is 20 x 25 x 4. The actual size is 19 1/2 x 24 1/2 x 3 5/8 (19.5 x 24.5 x 3.63), so it is recommended to measure your air filter for the exact size and compare it to the actual size to ensure proper fit. These filters are made in the USA and have a MERV 12 rating, which is equivalent to MPR 1500-1900.

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.

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 16x25x1 MERV 13 Pleated Air Filter is a cost-effective and simple way to improve the air quality in your home. It is designed to filter microscopic particles such as dust, spores, pollen, viruses, and bacteria. The 100% synthetic electrostatic media ensures high efficiency with low air flow resistance. It is easy to install and should be changed every 60 to 90 days, or every 30 days during peak summer and winter months. It's manufactured by Filtration Group, a world-leading supplier of filtration solutions.

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.

The Filterbuy MERV 11 Air Filter is designed to fit your furnace, air conditioner, or heat pump, helping you keep your HVAC system running smoothly and your indoor air clean. Its MERV 11 rating means it effectively captures dust, allergens, and pet dander, making your home healthier. The filter's electrostatically charged pleated media traps tiny particles and lasts much longer than standard fiberglass filters, so you don’t have to replace it often. Plus, its sturdy frame with dual wire backing is easy to install and built to withstand extreme temperatures, ensuring durability and reliable performance for your comfort.

The Aerostar MERV 13 Filter is designed to improve your home's air quality by capturing tiny particles like dust, pollen, pet dander, smoke, and even some bacteria and viruses. Its actual size fits standard 20x20 inch HVAC systems, making it easy to install without hassle. The filter uses a synthetic electrostatic material that efficiently traps contaminants while allowing air to flow smoothly, so your system works well without extra strain. Changing the filter every 60 to 90 days keeps your environment healthier, and during heavy use in summer or winter, replacing it every 30 days ensures optimal performance.