The Mammoth Ion and Ozone Generator 3,500 SqFt Air Purifier was a strong contender for the top spot. It offers a ton of features for the price, including an adjustable ozone level, two ion settings, and an ion/ozone toggle.
However, the Mammoth didn’t quite live up to the hype. While it did better than average at removing odors, it couldn’t quite match the performance of similarly priced purifiers. It also has some confusing settings, like an ion/ozone toggle that doesn’t appear to do anything.