How can building envelope improvements affect energy loss?

Building envelope improvements are crucial for reducing energy loss in a building. The envelope, which includes the walls, roof, windows, and doors, acts as a barrier between the interior of the building and the external environment. By enhancing the building envelope—through better insulation, air sealing, and high-performance windows—the thermal performance of the building is significantly improved.

When these improvements are made, they help to minimize the amount of thermal energy that escapes from or penetrates into the building. This means that heating and cooling systems do not have to work as hard to maintain comfortable indoor temperatures, leading to lower energy consumption and costs. Improved insulation slows down the transfer of heat, while air sealing prevents drafts that can lead to energy loss.

Additionally, high-performance windows can reduce heat gain and loss by providing better insulation and reducing air infiltration. All these elements combined contribute to a more energy-efficient building, demonstrating why this option correctly identifies the benefits of improving the building envelope.