Product review (5 stars): Best idea you have had in years, so buy one.
It is crazy to me to pump your heat out in the winter (We live in Denver). Every season change I covert to a system like this and this is the best I found in 20 years. Just do it, it will pay for itself in a month??? I used to use a panty hoe on the vent, it gets clogged and dry time goes up, canceling out your savings. This unit is the best.