Key Facts for Energy Efficient Building
A buildings location and its surroundings play a key role in regulating its temperature and
energy needed for lightings. Trees and hills provide shade and can block wind. Building with east-west orientation and south-facing windows can decrease energy consumption.
The energy-efficient windows, sealed doors, walls insulation, basement slabs, and solid
foundations can reduce heat loss by 25-50%. However, tightly insulated buildings may require ventilation.
Dark roof is up to 70° F hotter than the most reflective white roof surface. A
light-colored roof uses 40 % less of energy for cooling than building with a dark roof. In hot climate lite color roof is recommended, in cool climate dark roof reduces energy cost for heating.
Reducing cost for lightings can be achieved by big windows and skylights. The
fluorescent bulbs use two-thirds less energy and last 6 to 10 times longer than incandescent bulbs. Sensors and dimmers also is an additional way to reduce lightings expenses.
Buying energy-efficient appliances is a smart investment. For example, Energy Star
refrigerators reduce energy consumption of 40 %. An advanced power management system is recommended.