Which tower fans will cool the largest space?

If you have a big space to cool, you'll probably like a large, oscillating tower fan or one that includes the description "whole room."

Are some fans quieter than others?

Yes. If noise levels are a concern, look for fans described as "quiet" or those with a "noise reduction" feature.

What is an ionizer and why do I need one?

Ionizers are designed to clean and purify the air in your home or office as it passes through the tower fan. You may want an ionizer if you are concerned about indoor air quality.