assuming any light or sound energy created by the appliance stays inside the house, 100 watt hours of electricity can ony be turned into exactly 100 watt hours of heat
Something that never gets mentioned is that energy doesn't just disappear. All the energy that enters your house is eventually turned into heat. So this is only really "wasted energy" when it's hot outside. People with electric heating could leave all their lights and appliances on all winter (or summer for our friends down under) long and the only effect would be the heater kicking in less often.
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assuming any light or sound energy created by the appliance stays inside the house, 100 watt hours of electricity can ony be turned into exactly 100 watt hours of heat
Something that never gets mentioned is that energy doesn't just disappear. All the energy that enters your house is eventually turned into heat. So this is only really "wasted energy" when it's hot outside. People with electric heating could leave all their lights and appliances on all winter (or summer for our friends down under) long and the only effect would be the heater kicking in less often.