The use of suitable thermal mass and thermal insulation is important for controlling the heat flow. They are usually the key energy users and their design is affected by architecture features and occupant needs. While being energy efficient, HVAC systems should have a degree of flexibility to allow for future extensions and change. Lighting systems is another key energy user and additional cooling energy will be required to remove the heat generated by luminaires. Switching is provided to turn off unnecessary light.
Illumination is provided in an efficient manner.
Electric lighting integrated with daylight. The use of energy efficient lamps and luminaires. Use light-coloured room surfaces.