The balcony gets particularly hot and stuffy when the afternoon sun beats down; which types of doors and windows offer good heat insulation and help save electricity?

Two key features: wide-cavity thermal break profiles and offline Low-E insulated glass. The thermal break strips must be made of PA66 nylon—avoiding inferior PVC—with a width of at least 24mm for superior thermal insulation. The Low-E glass reflects solar heat, keeping indoor temperatures 3–5°C cooler in the afternoon and significantly reducing air conditioning energy consumption. Foshan Forge Doors & Windows are specifically designed for Lingnan homes exposed to intense afternoon sun; their multi-layered thermal insulation structure ensures the window frames do not become hot to the touch, even under direct, scorching sunlight.