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When it’s time to replace your furnace filter, making a decision isn’t as easy as just buying the first filter you see. There are some major differences between different types of furnace filters that can play a big role in how effective they are in filtering out dirt, dust and other pollutants from your HVAC system. When you spend money on a Honeywell furnace filter, you want to know that you are getting the right filter for your home.
Confused about which type of filter to get? Let Your Filter Connection break down the four types of furnace filters.
Mechanical: The most basic furnace filters are the types of filters that simply catch large particles and trap them in their mesh exterior. These filters can be made out of manmade or natural fibers. Because they don’t trap small particles such as fine dust or allergens, they are not suited for people with allergies who want relief through their air filtration system. They are the least expensive type of filter and only need to be replaced once a month.
Electrostatic: Electrostatic filters feature fine strands of polyester that have been electrically charged so they will attract and capture fine particulates in the air through static electricity. These filters typically do not need to be replaced, although you will need to clean them every three months.
Electrical: Unlike the typical mechanical or electrostatic Filtrete filter, an electrical furnace filter doesn’t have fibers to capture particles. Instead, they are attracted to an electrical grid of wires that runs throughout the filter. These types of filters are very efficient; in fact, they are so efficient that they need to be cleaned weekly to be efficient.
HEPA: Filters such as HEPA 3M filters offers the highest level of efficiency possible. These furnace filters will often catch more than 99 percent of all potential pollutants. However, because of their high cost, they are most commonly used in areas where filtration is essential such as hospitals or laboratory clean rooms.
