In the grand scheme of things, there is a relatively small range of temperatures and humidities in which we actually feel comfortable. Just because your house is maintained at a particular temperature does not necessarily mean that you will be comfortable. For example, on a warm but humid day, you may find yourself bumping the temperature down a few degrees in order to feel comfortable.
The Comfort Window is a region on the temperature vs. relative humidity chart describing where you personally feel comfortable. By measuring the moisture content of the air, Comfort Window is able to determine and maintain your homes conditions within your personal Comfort Window.
By taking into account the Humidity levels in your home, Comfort Window uncovers additional temperature humidity regions which still feel comfortable.
"The Comfort Window is an exciting new way to think about comfort."