I live in a van and have only a certain amount of energy I can use each day but can never tell what appliances are efficient or not. HELP
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For most appliances efficiency will be relative to other appliances in the same class.
To take a lightbulb as an example. Imagine a light bulb uses 10 watts of electricity and produces 1 watt of heat. That’s a lot less efficient than a heater that uses 100 watts of electricity and produces 100 watts of heat! But obviously you can’t ditch your light bulbs for heaters because they don’t do the same thing.
What you need to do is compare the a light bulb with another bulb. If the next best bulb you can find uses 15 watts for the same light, you can say your bulb is as efficient as you can get.
As another commenter said, though, that might not actually be what you’re interested in – you might be more interested in the power consumption of different things so you know how much you can/should use them, and that’s wattage x time used.
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