How to efficiently use your German rolladen shutters and lower your home temperature:
- Before leaving for work or running errands, open all the windows and shutters to allow cool air to enter and hot air to leave. Normally, between 4–8 a.m. we have the coolest morning hours.
- Remember, hot air rises, open your top-level windows.
- Just before leaving, close all shutters, especially windows that are getting direct sunlight. This process can create your own personal A/C without increasing energy consumption.