Lighting and Windows

Light the task, not the whole room

Start with the activity: reading, cooking, working, relaxing, or moving safely through a space. Direct light where it is needed, then use general lighting only to the level that keeps the room comfortable and usable.

Use daylight deliberately

• Open curtains or blinds when daylight is useful and does not add excessive heat or glare.
• Shade windows that receive strong direct sun, especially when an air-conditioner is running.
• Keep windows and light-colored surfaces clean so available daylight can travel farther.

Choose and care for lighting

• Prefer efficient lamps such as LEDs in frequently used fittings, with brightness and color suited to the space.
• Switch off lights in unoccupied rooms when it is safe to do so.
• Clean lamps and fixtures after switching them off and allowing them to cool.
• Replace flickering, damaged, or unusually hot fittings through a qualified person.