When it comes to improving air quality, a 4-inch thick air filter has a clear advantage over a 1-inch filter. Not only does it provide better longevity and airflow, but it also offers maximum filtering potential. At FilterBuy, the price difference between 1-inch and 4-inch air filters is usually only a few dollars, making the 4-inch filter an excellent value. If you're looking for a replacement filter, the best option is to buy the same one that you're already using.
However, if that's not available or you want something that costs less or works better, there are plenty of standard sizes to choose from. Some can even be adapted to fit different sized filter boxes or air return openings. When selecting an air filter, it's important to consider the MERV rating. MERV 6 is the level that begins to protect air quality, so MERV 8 is a good minimum level for an air filter if you want to start protecting air quality.
Around MERV 8, filter designs typically use pleated materials and can reliably capture pollen, mold spores, and many types of household dust. Thicker air filters tend to last longer because they have more square feet to capture and retain air particles. If the residents of your home regularly breathe dirty, unfiltered air, this could even lead to respiratory complications. Therefore, it's essential to make sure you install the new filter facing the correct direction.
Look for arrows on the filter frame that indicate the direction of the air flow. The 20x20x1 size is an ideal choice for many ovens and other systems. It's available in a variety of sizes and usually at a lower price than the similar competition. This pleated electret filter traps just about everything you would breathe at home and is an excellent option for large commercial spaces such as warehouses or workshops. When it comes to improving indoor air quality, investing in a 4-inch thick air filter is one of the best decisions you can make. Not only does it provide better longevity and airflow than 1-inch filters, but it also offers maximum filtering potential at an affordable price.
With its ability to capture pollen, mold spores, and many types of household dust, the 20x20x1 size is an excellent choice for both residential and commercial spaces.
