10 Best Reusable Furnace Filters 2025 in the United States

The Filtrete 24x24x1 AC Furnace Air Filter comes in a convenient 6-pack, making it suitable for those who want a long-term solution for keeping their home's air clean. The filters have a MERV 5 rating, which means they can capture larger particles like dust and lint but may not be as effective against smaller particles like bacteria or smoke. This makes them a good option for general household use but less ideal for those with severe allergies or respiratory issues.

Made from polypropylene, these filters are lightweight and easy to handle, with actual dimensions slightly smaller than the nominal size—23.81 x 23.81 x 0.66 inches—ensuring a good fit for most systems. The recommended cleaning frequency is every three months, which aligns with standard maintenance practices, although this could be more frequent in homes with pets or high dust levels.

One of the key features is the 3-in-1 technology designed to enhance particle capture while allowing for efficient airflow. The airflow resistance is generally low, which means it won’t strain your HVAC system, but it also implies less filtration capability. This product is versatile and compatible with various systems, including air conditioners and furnaces. The subscription option for automatic delivery is a convenient feature for those who prefer not to worry about reordering.

The Filtrete 12x24x1 AC Furnace Air Filter by 3M offers solid performance for those looking to improve air quality in their homes. With a MERV 11 rating, it efficiently captures particles like pollen, dust, and pet dander, which can be beneficial for households with allergies or pets. The 3-in-1 technology enhances airflow while trapping unwanted particles, contributing to a healthier indoor environment.

The filter is made of durable polypropylene and designed to last up to three months, after which it can be cleaned to maintain efficiency. However, it’s essential to replace or clean the filter regularly, as a dirty filter can reduce airflow and strain your HVAC system, leading to higher energy costs. This product comes in a pack of two, providing a six-month supply for most households, and fits into standard 12x24x1-inch slots.

Users can benefit from the Filtrete Smart app that offers reminders for filter changes, ensuring optimal performance. It is important to note that this filter is well-suited for residential use, but not for commercial settings. The dimensions listed might be slightly off (actual size 11.719x23.72x0.85 in), so measure your system carefully. Additionally, the filter has a slight airflow resistance, which might not be suitable for systems that struggle with strong airflow. In conclusion, the Filtrete furnace filter is an excellent option for residential use, particularly for families concerned about allergens and indoor air quality.

The Filtrete 20x25x5 AC Furnace Air Filter by 3M is a high-quality option for anyone looking to improve indoor air quality. With a MERV rating of 12, it effectively captures a significant amount of airborne particles, including pollen, pet dander, bacteria, and viruses, making it certified asthma and allergy-friendly. Its electrostatic air cleaning technology enhances its efficiency by attracting and trapping unwanted particles, ensuring cleaner air flows through your home.

The filter also boasts a decent size (24.19 x 4.69 x 19.56 inches), fitting well in many standard AC and furnace units, including the Trion Air Bear models. Made from polypropylene, it is both durable and lightweight, which adds to its ease of use. Furthermore, it contains at least 50% recycled content, making it an environmentally friendly choice. One of the notable features is the Filtrete Smart App, which helps users set reminders for changing the filter, ensuring optimal performance.

It's important to note that the filter should be replaced at least once a year to maintain its efficiency. While the high MERV rating can slightly reduce airflow resistance, it is generally manageable for most residential systems. This filter is ideal for households looking to improve air quality, especially those with allergy or asthma concerns, and who prefer a low-maintenance, effective solution.