Your lifestyle dictates the intensity of filtration you need:
: If you use a 1-inch filter in a slot designed for 4-inch filters, it will leak air and bypass filtration. Filterbuy notes that incorrect thickness can degrade air quality and strain your system. what furnace filter to buy
: Made of polyester or cotton folds. These have more surface area, allowing them to trap more particles without instantly clogging. Your lifestyle dictates the intensity of filtration you
Different materials offer varying levels of filtration and durability. These have more surface area, allowing them to
: Uses static electricity to attract dust like a magnet. These come in disposable or washable versions.
The Minimum Efficiency Reporting Value (MERV) tells you how well a filter traps particles. MERV Rating Large particles (lint, dust) Protecting the furnace motor only. MERV 5–8 Mold spores, hair, pet dander Standard homes with no pets or allergies. MERV 11–13 Smoke, bacteria, smog Homes with pets, smokers, or allergy sufferers. MERV 14–16 Viruses, fine tobacco smoke Highly sensitive individuals or clinics. 3. Choose Your Filter Material
The first step is checking your current filter for its (e.g., 20x25x1), which is printed on the side.