Adjust light level. Higher light settings use more energy, so save energy by using dimmer controls, high/low switches or three-way bulbs to adjust the level of light to exactly what you need.
In water heaters Set the water temperature to 120° F. It takes less energy to heat water to a lower temperature. If you have an electric water heater, you’ll have to remove the cover plate of the thermostat to adjust the temperature. For safety reasons, remember to turn off the water heater at the circuit breaker/fuse before changing the temperature.
Don’t set the thermostat at high initially. When you first turn on your room air conditioner, set the thermostat at normal or medium. Setting it any colder won’t cool the room any faster but consumes more power.
Position lights properly. Try to illuminate the entire activity area without creating distracting glares or shadows. To do this, position your light source closer to the area you want lit. This saves energy by not over-lighting an unused area.
Consider LED (Light Emitting Diode) lighting. LEDs are becoming more common for can, track, under-cabinet and holiday lighting. Initial cost is more, but the lights use 10 times less energy and last 50 times longer than incandescent lights. They use one-third the energy and last 5 times longer than compact fluorescent lights.