Paying for Saving Money why? Plus my House is cool enough

Maybe your home does not need the Therma Vent system, but just because your house stays cool does not mean that you have a healthy house. Proper ventilation is not only to keep your attic cooler, in fact the reason they started ventilation attics is because they were trying to battle mildew and mold. Both of these are created because of improper ventilation, if you insulation is at the floor of your attic you need proper ventilation. You need at least industry standard ventilation which would include a soffit vent (which is located at the bottom of your roof normally where your outside wall and overhang of your roof meet), and a ridge vent (which is located at the highest point of the roof or peak of your roof). Without both a ridge vent and soffit vents you will not have ventilation that can keep mold and mildew from occurring. In fact sometimes industry standard ventilation is not enough to keep mold and mildew from happening. The Therma Vent system will reduce or completely eliminate this possibility.