When it comes to choosing the right furnace filter for your home, it's important to know the size and type of filter you need. The easiest way to determine the size of your filter is to remove the current filter and look at its dimensions, which are usually printed along one side. If you can't find it, check the manufacturer's website or refer to the oven manual for specific information about your unit. You can also use a measuring tape to measure the size of the filter if needed. Thicker filters are denser and block more dust and particles, but they can also make the oven work harder to draw in air.
Permanent reusable filters (also known as washable filters) are built with a solid aluminum or plastic frame and are more efficient than a disposable filter. You want to find an oven filter that removes the most contaminants and has the least effect on the airflow of your HVAC system. Look for filters with a high MERV rating of 12, as they can clog more quickly than filters with lower scores. Regularly replacing your oven filter is essential for extending the life of your heating and air conditioning components and improving air quality. One of the best choices overall is the Filtrete oven filter with its disposable electrostatic design, multiple size options, MERV rating of 12, and 3-in-1 technology to trap lint, dust, pet dander, soot, pollen and mold.
FilterBuy also offers a MERV 8 oven filter that comes in various sizes and thicknesses ranging from one to four inches. Adjustable filters and sizes are available for non-standard openings, as well as washable filters that can be removed and cleaned. A clogged filter can cause both the oven and the air conditioner to work harder and less efficiently. The Aerostar manufacturer recommends changing this filter every two to three months in autumn and spring, and once a month during intensive oven use, such as in winter.