1•
With energy efficiency being the most important, this encompasses practices such as tight construction, improved thermal systems, adequate heating and cooling systems, air barrier continuity in the framing and sheathing stage, lighting efficiency using LED and Compact Fluorescent lights, energy efficient windows and Energy Star appliances.
2•
Water efficiency is also a very important component in the green building practice. Low flow, high efficiency toilets, low flow faucets and showerheads, Energy Star washing machines and engineered plumbing systems which entails where the water heater is located to a demand controlled hot water recirculation pump.
The indoor environmental quality is very important and this included duct tightness, right sized heating and cooling systems and equipment, low voc paints and carpeting, internal moisture and how it is managed, fresh air ventilation and air pressure balancing.
3• The durability of a building is obviously extremely important. Without the balance of how the air, thermal and moisture barrier work together as a system, there is a adverse effect on building materials.