When it comes to choosing the right furnace filter, there are a few important factors to consider. First, you need to make sure that the filter is the correct size for your furnace. Refer to the furnace manual or existing filter to determine the dimensions. Second, you need to choose the right type of filter.
Filters with a MERV rating of up to 6 are great for trapping lint, pollen, dust, dust mites, and mold. However, not all HVAC systems can handle filters with higher MERV ratings, such as HEPA filters. HEPA filters are believed to remove 99.97% of particulate matter from the air, but most residential systems cannot work with these filters because the filtration screens are too dense to allow adequate airflow through the system. Therefore, it is best to save HEPA filters for air purifiers designed explicitly for them. When it comes to a system as complex as your HVAC, a simple small furnace filter may not seem as important.
However, choosing the best furnace filter requires that the filter matches the furnace manufacturer's specifications. Disposable pleated filters are available in a variety of sizes and thicknesses ranging from 1-4 inches to fit a wide range of furnaces. Many furnace filters need to be changed every 2-3 months, so many options come with 4-6 filters per purchase. The high efficiency MERV-12 rating makes this air conditioner furnace filter an excellent choice for homeowners who want to trap as much debris as possible in the air. A high-efficiency particulate air (HEPA) filter blocks up to 99.7 percent of airborne particles of 0.3 microns or greater, but is not available in sizes that comply with standard furnaces.
Alternatively, if you are interested in a more economical selection, the FilterBuy furnace filter also has a disposable electrostatic design, but has a MERV rating of 8 that can trap 90 percent of contaminants and filter media. We researched the most sought-after furnace filters in their respective categories and found that the best options available are compatible with many brands of HVAC systems and furnaces, filter as many annoying particles and contaminants as possible, have a long service life, and come with a high MERV rating. You should replace the filter along with the change of season, as regular maintenance ensures that the filter is not clogged with dust, pet hair, and other airborne particles, which can reduce furnace efficiency. Keep reading to learn everything you need to know about choosing the best furnace filter for your system and to find out why we have chosen the following replacement filters as one of the best options for most homeowners. The best furnace filter should protect the active parts of your furnace and trap dust, pet dander, and pollen to prevent these airborne contaminants from recirculating in your home. Available in dozens of sizes and with Bluetooth technology to monitor filter usage, the Filtrete Smart AC Furnace Air Filter is the best choice for a replacement furnace filter. With a FilterBuy MERV 8 furnace filter, you can choose from a variety of filter sizes and thicknesses ranging from one to four inches, making FilterBuy a versatile and economical option.