Aluminum Alloy Windows themselves do not have a clear sun protection level classification. However, their sun protection performance can be reflected and evaluated by a variety of factors.

In areas with hot summers and warm winters or areas with relatively hot summers, solar radiation has a greater impact on indoor temperature and energy consumption. In order to reduce solar radiation heat gain, it is more important to improve the sunshade performance of aluminum alloy windows. The following are some factors and related methods that affect the sun protection performance of aluminum alloy windows:

1. Glass configuration: Using glass with different sunshade properties can improve the sun protection effect of windows. For example, heat-reflective coated glass can block 40% - 80% of solar radiation heat outdoors, reduce glare and have one-way perspective; heat-reflective coated insulating glass combines the advantages of heat-reflective coated glass and insulating glass, with low heat transfer coefficient and shading coefficient, and high sound insulation; sunshade type low-e insulating glass has good sunshade and temperature difference heat conduction blocking effect, can also maintain indoor heat in winter, and has good lighting, heat insulation and thermal insulation comprehensive effects. It is an ideal window glass material in hot areas.

2. Set up active external sunshade: such as external roller blinds, external blinds, etc., which can effectively block about 90% of solar radiation heat. In areas with hot summers and cold winters, this type of active external sunshade can not only block solar radiation in summer, but also allow more solar radiation to enter the room in winter, with obvious energy-saving effects.

3. Insulating glass built-in electric sunshade: good sunshade effect, diverse functions and flexible use, beautiful and simple appearance, but high cost.

4. Sunshade inside the window: such as internal roller blinds, internal blinds, thermal insulation curtains, etc. This method is simple and easy to use and is currently a more common external window sunshade method.

In addition, computer simulation calculation results show that effective sunshade measures for windows can significantly reduce building energy consumption by 10% - 20%. When choosing aluminum alloy windows, you can refer to the above factors to comprehensively evaluate their sun protection performance to meet different needs. At the same time, other properties of windows should also be considered, such as thermal insulation performance, airtightness, and watertightness.