Thermal Insulation

Aluminum, on its own, is a good conductor of heat. However, modern aluminum awning windows are designed with features to improve their thermal insulation properties. As mentioned earlier, the use of double - pane or triple - pane glass with gas - filled gaps significantly reduces heat transfer through the glass. The gas, such as argon, has a lower thermal conductivity than air, providing better insulation.

In addition to the glazing, many aluminum awning windows incorporate thermal breaks in their frames. Thermal breaks are materials, usually made of plastic or fiberglass, that are inserted into the aluminum frame to interrupt the flow of heat. These breaks separate the interior and exterior parts of the frame, reducing the transfer of heat from the outside to the inside of the building and vice versa. This helps to maintain a more stable indoor temperature, reducing the energy consumption of heating and cooling systems.

 Air Tightness

Air tightness is another important aspect of the energy efficiency of aluminum awning windows. When properly installed and sealed, these windows prevent air leakage, which can account for a significant amount of energy loss in a building. The weatherproof seals around the perimeter of the window frame, along with the tight - fitting sash when closed, create a barrier against drafts.

The use of high - quality hardware, such as locks and latches, also contributes to air tightness. These components ensure that the window sash is firmly pressed against the frame, eliminating any gaps through which air can escape or enter. By reducing air leakage, aluminum awning windows help to keep the conditioned air inside the building, whether it is heated in the winter or cooled in the summer, thus saving energy and reducing utility bills.