How Window Shutters Help You Control Room Temperature When closed, shutters become the next best barrier against San Jose’s wind and variable temperatures – after your windows. Window treatments such as shades, blinds, and draperies block most of the temperature from the outdoors, not all. And, where your window treatment’s quality means the difference between a cozy spot next to the window and one that’s not, Polywood® shutters are the optimal product. We make Polywood shutters from a synthetic polymer that insulates up to 70% better than an equivalent traditional wood shutter. In fact, the Polywood Shutter Insulating System blocks as much as 30 degrees of airflow and lessens heat transfer by 45.96%. This results in energy savings for your wallet – and total room temperature control. Your home’s HVAC system will work faster now that you have reduced the impact from the outside weather. When you want to bring in some of the effects of the external elements, simply tilt the louvers open and adjust them to a preferred position. You can get even more window treatment temperature control. Simply follow the instructions below to close your shutters all the way. How to Close Your Shutters for Optimal Temperature Control Two parts of your shutters ought to be closed to seal off external temperature: the panels and the louvers. To properly close your Polywood shutter panels, swing them toward the window. As you move the panels into the shutter frame, ensure that the pieces of weatherstripping interlock along the vertical ends of your shutters. To close your louvers properly, push the tilt rod toward the louvers, ensuring that the top of the tilt rod fits into the “mouse hole” just above the top louver. It is best to run your hand up the tilt rod, pushing in as you go. This is particularly true for taller shutters: sometimes a small push at the bottom of the tilt rod isn't enough and doesn’t close gaps at the top.