How to Choose Aluminum Windows & Doors: 7 Essential Selection Tips

During testing, heat is applied internally to observe the speed at which the internal temperature conducts outward, and the heat transfer value is obtained based on time and temperature.

The heat transfer coefficient of ordinary aluminum alloy doors and windows is about 3.5-5.0;

The heat transfer coefficient of broken-bridge aluminum alloy doors and windows is about 2.5-3.0;

The heat transfer coefficient of systematic aluminum alloy doors and windows is about 2.0-2.5.