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Incandescent lamp or the normal light bulb – stick to a higher-watt bulb for task lighting, and a lower-watt one when you want to light up an object d’art or an arrangement of plants – it will generate loss heat and keep the room cooler.
Compact Fluorescent Lamp (CFL) – CFLs have a longer life; use 75 percent loss energy, produce less heat and yet emit a warmer light than a regular light bulb. Most have a one-year warranty (get the store to write the purchase date on the bulb).
Fluorescent Tube Light (FTL) – A fluorescent tube light is more energy-efficient than an incandescent light bulb and suitable for constant lighting, say in a kitchen. The lumen output (or light output) of a 40-watt tube and a 100-watt bulb is the same. So about 60 percent of energy can be saved by using a tube.
Halogen bulbs – This bulb is filled with halogen gas which emits brighter light and gives the bulb a longer shelf life. These lights have a high color-rendering index, making them closet to natural light. On the flipside, halogen emits a lot of heat.
Daylight – There’s nothing better than large windows to bring natural light in. however, try to avoid south- or west-facing windows as they tend to take in a lot of heat and glare.