No matter which direction the Low-E glass is installed, it will not affect its function;

In winter, Low-E glass mainly reflects the heat radiation generated indoors;

In summer, Low-E glass mainly reflects heat radiation from direct sunlight and the outdoor environment.

Therefore, any direction is suitable for installing Low-E glass.

Although there is basically no direct sunlight in the north direction, there is also horizontal infrared radiation generated by the environment in the north direction in summer, so Low-E glass also plays a role.