How Window Shutters Allow You to Control Room Temperature Closed shutters are the next best barrier against the extreme temperature and wind in Phoenix, coming right after windows. Window treatments such as blinds, draperies, and shades block most of the temperature from the outdoors, but not all. And, when you need a sturdy window treatment that gives you a comfortable spot next to the window, Polywood® shutters are the optimal product. We make Polywood shutters from a synthetic polymer. Polywood shutters insulate up to 70% better than an equivalent traditional wood shutter. In fact, the Polywood Shutter Insulating System blocks up to 30 degrees of airflow and reduces heat transfer by 45.96%. This results in energy savings for your wallet – and complete room temperature control. Your home’s heating and cooling system takes less time to work since you’ve now reduced most of the impact from the weather outside. If you want to bring in some of the light and be more exposed to the outside temperature, just tilt the louvers open and adjust them to how you’d like them. 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 need to be closed to seal off outdoor temperature: the louvers and the panels. To close your Polywood shutter panels properly, swing them toward the window. As you push the panels into the shutter frame, make sure to interlock the pieces of weatherstripping along the vertical ends of your shutters. To properly close your louvers, push the tilt rod toward the louvers and make sure the top of the tilt rod fits into the “mouse hole” just above the top louver. Do this by running your hand up the tilt rod, pushing in as you go. This is especially true for taller shutters – sometimes a small push at the bottom of the tilt rod isn't enough and leaves gaps at the top.