Best budget: Aerostar MERV 11 Pleated Air Filter; How we chose the best furnace filters. Many homes have a furnace that needs regular maintenance, including replacing the furnace filter.

Clean the air in your home and protect your HVAC system with one of these top-performing air filters from CR’s tests Thicker ...

This type of filter can trap the smallest particles, creating the best air quality. This type of filter is more expensive and can't be used with all filters. How to change a furnace filter ...

Air Furnace Filters 20x25x5s Filtrete 20x25x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 2-Pack (exact dimensions 19.688 x 24.688 x 0.84) 3M ...

Considering that new furnaces can cost as much as $10,000 (plus installation), it's within your best interest to keep your current one well-maintained -- and keeping the filter clean is one of the ...

Furnace air filter sizes vary and are usually expressed in three numbers: depth, width, and length. For instance, 16x24x1 is a typical size, with 16 inches for width, 24 inches for length, and 1 ...

It couldn’t quite manage to hang with the best air purifiers in terms of air-clearing performance during our at-home testing, with a 93.8% clearance rate (falling behind the lower-price Coway ...

Best Air Filters for Your Central AC and Furnace Clean the air in your home and protect your HVAC system with one of these top-performing air filters from CR’s tests By Mary H.J. Farrell ...

Best for allergies: AIRx Filters Allergy 20x25x1 MERV 11 Pleated Air Filter; Best budget: ... (also one of the most common sizes in furnace filters). However, ...

Looking for the best Filters Fast Furnace Filters? ... BULK PACK – Includes (2) high-quality 16x25x5 AC furnace air filters (actual size: 15.875 x 24.75 x 4.25).