The testing categories that we created for our furnace filter 20-x-20-x-1 tests allow us to rank each product by focusing on specific factors that contribute to the overall quality of each product. When it comes to rating filters and deciding which products stand out, the categories we selected include durability, efficiency, and application. With over 35 years of experience testing a variety of different products, we’re confident in our process when narrowing down the top products that we recommend.
Durability: The durability of each furnace filter determines its value and if it is worth purchasing. With our durability category, the contributing factors that determined the durability of the item include the quality of the materials that are used and the construction of the product. It is also influenced by its lifespan and how often it needs to be replaced. The filter may not be effective enough for homes where pets are present, due to pet dander and hair that can circulate, as it is not easily trapped by the product.
Efficiency: The efficiency of each furnace filter was evaluated to determine how well it worked in improving the air quality in each setting. We tested each product to determine how many airborne particles, dirt, and pollen were collected during a specific time period.
Application: The ease of installation of the furnace filter is one of the main factors that was considered to ensure consumers could easily replace existing filters with the new product. We evaluated the size of the items and compared them to the dimensions that were listed in the product description and packaging. We also checked for any gaps during installation or if it felt secure in the furnace.