Ionic air purifiers are not filtration systems like traditional air filters.

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How Ions Make An Air Purifying Difference

If you're concerned about the cleanliness of the air in your home or office, you probably are considering installing some kind of air purification system. But before you make a final decision, consider the benefits of ions. Ionic air purifiers are not filtration systems like traditional air filters. Instead, ionic purifiers work by sending out negatively charged ions into the air. The ions stick to chemicals and particles – like dust, pet dander, smoke and pollen – and drop out of the air. You have to maintain regular cleaning because the particles drop onto the surfaces of your home in an ionic system. It may seem like a dirty way to clean, but when done right, it's highly effective.

To ion or not to ion

There are differences from one brand and type of ionic air purifier to another. Some have fans, and some don't. If you're bothered by sound, opt for a fan-free model; if such noise doesn't bother you, then considering a fan option is agreeable. Fanless purifiers rely on air currents in the room, so if you don't move much in the room where your purifier is placed, again, consider a fan. If you have a fan in your unit, be sure to clean it regularly, just as you would any other fan unit.

You can also consider an electrostatic air purifier. These types of units use carbon or HEPA filters, which catch larger particles, like dust and pet dander, and push smaller particles through an electric field, ionically charging them, before sending them back into the environment. You have to periodically clean the entire unit, including the filter, electric cell and collector plates. Depending on air quality, more frequent cleaning might be necessary.

Be aware that most ionic air purifiers create a distinct “ozone” scent. The smell can help mask other odors but is bothersome to sensitive users. It can also be bad for your health when breathed in large quantities, so make sure your purifier only emits 50 parts per billion or fewer.