![]() The This Old House Reviews Team focuses on creating in-depth product and service review content to help inform your purchasing decision for just about any item or resource that you might need for your home. ![]() This Old House has empowered homeowners for more than four decades with top-notch home improvement content in the form of television programs, print media, and digital content on its website and social media platforms. Why Trust The This Old House Reviews Team Filter: The filter inside of the frame is typically made of fiberglass, polyester, cotton, or paper.Frame: The frame that holds the filter together is usually made of aluminum, steel, plastic, or paper.Washable: While washable filters don’t use MERV ratings, some claim to trap a certain percentage of airborne particles.Ī furnace filter can be separated into two parts-a frame and a filter-that are made of different materials.Commercial: Commercial filters have higher MERV ratings between 17 and 20.However, experts recommend using at least a MERV 8 filter, with MERV 11 and MERV 12 filters working better for odor elimination. Disposable: Disposable filters are usually between MERV 6 and MERV 13.The MERV rating given to a filter is usually based on its type. The higher the number, the finer the filter and the smaller the particles it can capture. Filtration Levelįurnace filters are rated according to the MERV (Minimum Efficiency Reporting Value) scale. Most filters are one inch thick, but some are two, four, or five inches thick. A filter’s size is expressed in inches as width by height by thickness. You’ll want a filter that’s the same size as the one that’s currently being used in your HVAC system. Before choosing a furnace air filter, consider its size, filtration level, and material.
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