|Emissions Reduction Toolkit||Climate Resilience Toolkit||Climate Resilience Guidelines|
Infrared New England
The building envelope, the boundary between the interior and exterior of a building, performs a number of tasks including exterior protection (e.g. protection from the elements) and preservation of internal space requirements (e.g. thermal, light, and acoustic comfort, humidity conditions). The use of a range of building technologies to create an energy efficient building envelope reduces both the thermal energy lost to the building’s surroundings and the amount of energy needed to heat and cool the building. Heating, cooling, and ventilation are responsible for around a third of primary energy use in the commercial and residential sectors, and energy represents approximately 30% of the typical office building’s costs. The technologies deployed can address a number of sources of energy loss such as air leakage, wet insulation, and thermal bridging. Installation options include:
The amount of energy saved depends on the building and the technologies used, though ENERGY STAR buildings have been shown to reduce operating costs for corporate real estate owners by up to $25,000 per year for every 10,000 square feet of office space. Insulation and air sealing through effective air barrier systems can reduce non-residential building electricity consumption by more than 25%. Building owners interested in making energy efficiency improvements to their buildings should conduct energy audits to determine the most cost-effective methods to improve the efficiency of the building envelope.