on purchases of $34.99 or more and
Free Standard Shipping on purchases of $34.99 or more applies in the U.S. only. Free Returns in the U.S. and Canada. Large, oversized items and products delivered by special or white glove carriers are not eligible for free shipping or free returns. Free returns are not applicable to final sale/non-returnable items. As always, check the deal's Fine Print for restrictions.
So far, no real complaints. As one consumer did mention the noise volume on med-high is very exceptional. Depending on your perspective--it's great for drowning out noise should one like to be in a really deep sleep.
Otherwise, the air content is noticeably better.
My husband always complained he found it hard to breath at night in the winter when the windows had to be closed. We used the Therapure TPP230 and he
says he breaths much better. We are not using it so much now in the spring as we can open the windows.