Now that I have 2 of this in my house together with the other Holmes purifier that I have, I know that the air in my house will be cleaner. I'm looking forward to using this on the coming more years to come. This will really help me control my allergies.
The only time you hear it running is when it is on high and the only time it's on high is when the air quality is bad. I have two cats and when they scratch themselves you can see fine hair come off of them. The air purifier clears the air pretty fast. I'm very happy with this purchase.
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