While they work on microscopic particles, they can also remove larger particles (including dust, pollen, and some mold spores) when they’re suspended in the air. Filters with very fine mesh are called HEPA filters. Mechanical filters: These purifiers use fans to force air through a dense web of fine fibers that trap particles.

Others are ineffective, or even potentially harmful to your health.

But if you’re sitting next to a fireplace in the living room for extended periods of time, a room air purifier there may not be a bad idea.' A room air purifier may be worth it too, say, in a bedroom, if you sleep with your pet.ĭifferent air purifiers work using a range of technologies. Similarly, he says, 'a whole-house system will work at filtering all the air that passes through it via the HVAC system. While your house might feel sufficiently warm, you might have a particularly drafty room with old, poorly sealed windows placing a space heater there would make the room more comfortable. Think of a room air purifier as a supplemental unit, like a space heater in the context of a whole-house heating system, explains Misha Kollontai, who oversees testing of air purifiers at Consumer Reports. They’re separate from whole-house air purifier systems and air filters, which are integrated into a home’s heating, ventilating, and air conditioning system and designed to clean the air in the entire house. Portable room air purifiers are designed to filter the air in a single room.

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