What Does an Ionizer Do On a Tower Fan?

A tower fan is sometimes necessary to keep a moderately small area cool.

However, what good is a fan when it keeps you cool but continues to blow around all the impurities in the air around the room?

This is why many tower fans nowadays include something called an Ionizer.

So, what does an Ionizer do on a Tower Fan?

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Ionizers emit negative ions, which sounds bad but great for us. They do this by electrically charging the air molecules through the electrically charged wire inside the ionizer, thus creating negative ions.

Negative ions attach to airborne particles such as pollen, mold spores, dust, soot, smoke and pet dander, making them heavy enough to settle out of the air. Independent evidence that this improves health is thin, and some ionizers produce ozone, which the US EPA says can harm the lungs (EPA on ozone).

Thus, a tower fan with an ionizer is aimed at those with any allergies, asthma, or chemical sensitivities. The ionizer unit is located within the fan. They also reduce static electricity, which is the one effect you can notice straight away.

Ionizer makers also say the negative ions counteract positive ions, which build up indoors around electronics and in polluted air.

Claims that positive ions cause fatigue, raise blood pressure or alter mood are not well supported, so treat an ionizer as a dust-control feature rather than a health device.

When the negative ions released from the ionizer come in contact with the positively charged particles in the air, such as bacteria, dust, pollen, smoke, and other allergens, the charges bond to one another, forming dense particles of dirt that cannot float in the air.

These heavy dirt particles drift to the ground to be swept up or vacuumed away, stick to surfaces within a room to be dusted away, or collect on an electrically charged collection plate near the ionizing system.

Though ionizers sound amazing, it is worth noting there seems to be conflicting information on whether they are beneficial, and often, people may not notice any tangible difference. Some ionizers produce ozone, which is detrimental to your health, so be sure to check if your tower fan ionizer does or not, and check out our guide to the best tower fan.