After speaking with Madeline about eliminating odors and VOCs from our house, we settled on the GT1500. We have used the unit for close to two years now and can't imagine life without it. It really tackles odors, even from our dogs. This purifier was beyond valuable when we purchased a large area rug for our playroom and noticed after we brought it home that it was off-gassing. We turned up the purifier for a couple days and it completely eliminated the off-gassing odor. What a relief to think that our children were not exposed to those VOCs for weeks as the rug slowly off-gassed. We keep it running on low all the time to help maintain clean indoor air. The remote is a great feature as well.