: Uses static electricity to attract dust like a magnet. These come in disposable or washable versions.
: The cheapest option, designed mainly to protect your furnace from large debris. They do very little for indoor air quality. LJ Rolls considers these "basic protection" only. what furnace filter to buy
: MERV 8 is the sweet spot for most households. It provides solid filtration without stressing the motor . : Uses static electricity to attract dust like a magnet