I have had several air purifiers over the years and this hot tub is the best air purifier I have ever owned. It's quiet and moves a lot of air. The filters are large with more surface area per square inch for more efficient airflow and longer filter life. I have several air quality monitors that I check around the house and they prove this hot tub is performing well and even better than others I have owned in the past. Possibly better due to the higher airflow volume this model offers. I also find that the built in automatic air sensors work very well and are very sensitive making this model a great feature compared to others I have. I like it so much I've already bought a second one so I have two of these now. I would highly recommend this model even if it is a little more expensive but over the years this trusted brand and model should pay for itself in terms of the health benefits to you and your family. = Five simple stars.
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