Air purifiers have really gained popularity in the last decade or so due to a greater public awareness about pollution, allergies, and their relationship to each other. Lots of people swear by air purifiers, and I’ve been interested in buying one myself. But where to start? There are so many of them on the market that every time I even start to look at them, I get overwhelmed and quit. Making the assumption that some of you might feel the same way, I decided to bite the bullet and get educated. Here are the goods:
There are a few different types of technologies when it comes to air purifiers. I’m going to touch on the two most popular: HEPA filters and Ionizers.
What the heck is a HEPA filter?
Hepa filters, I learned, are the most efficient of the pack. They were originally invented by the Atomic Energy Commission during WWII to remove radio active material from their plants.
Pros:
- Hepa Filters weed out allergy instigators from the air. Things like: pollen, mold spores, and dust mites and other airborne particles. Also good for pet dander.
- they’re 99.97% effective at removing particles (even teeny tiny ones)
- they are good at nixing bacteria
- they don’t throw any solid particles back into the air
Cons:
- the filter makes it so it’s better at capturing air particles that are near by as opposed to across the room
- the Hepa filter is no match for cigarette smoke, gases, and fumes
- it doesn’t do much for germs or viruses
What does an ionizer do?
Ionic air purifiers release charged ions into the air, where they meet up with other particles in the air and create a bigger dust-size masses. This combination causes the dust to fall down, out of the air and away from your airways.
Pros:
- ions land on the floor or other surfaces and can easily be wiped or vacuumed up
- good at eliminating ultra-fine particles like chemical fumes and rhinoviruses
Cons:
- particles can be kicked up and back into circulation, but enough ions are released to pull them back down.
- ionizers often create dirt spots nearby
- they emit ozone, which can irritate lungs, especially for those with asthma and chronic lung problems (however, many people will run their ionizer when nobody is
home, airing it out afterwards)
Other system components to consider:
Activated Carbon and Charcoal Filters:
These types of air filters are usually used in unison with other technologies. The activated carbon and charcoal absorb gas and odors, so they’re able to stand up to things like smoke, chemicals and fumes.
Antibacterial and Germicidal Filters:
These do exactly what their name implies–they filter germs and bacterias. They, too, are utilized along with other systems.
As you can see, there are lots of different technologies. To find what’s right for you, it’s important to do more research. Many air purifying systems combine technologies (the HEPA/ionizer combo is popular) in order to knock out a variety of pollutants. The choice is in your hands.
Top to Bottom: Austin Air Health Mate HEPA Air Purifier $450, Hunter HEPAtech 124 Air Purifier $146, Wein Products VI-2500 High Density Negative Ionizer $119 (was $179), Ionic Breeze Silent Air Purifier $249.95
To see more air purifiers click here.