Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: leaves odor and stuffy air
Review: I bought this for my son's dust allergies. The carbon pre-filter leaves a strange odor. The filter does well at removing dust and allergens, but it seems to also remove available oxygen. It left my son's room so stuffy that he couldn't breathe. So the machine is just sitting in our closet. We found that shampooing the carpet, and vacuuming several times per week thereafter, did the best job at eliminating my son's discomfort due to dust. BTW, the HEPA air filter is not listed on this page and costs $80 and now, according to Hunter, lasts only 3-6 months, not one year.
