According to the U.S. Department of energy, an incandescent light bulb is more efficient as a heat source than a light, with nearly 90% of the input energy being converted to heat. Where can you find incandescent lamps in your house?
Recessed "can" fixtures
Wall sconces
Suspended fixtures
Lamps and task lighting
Accent lighting and "track" lighting
Illuminated exit signs
Exterior lighting
Now, I know why my mom left the light on in the garage in the winter for the dog.
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