A fan can help you feel cooler, but won't lower the temperature of a room. Image: Shutterstock

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Want to spend less on energy? You’re not alone. Summer’s approach means air conditioning season is almost here, just in time for a global energy crisis.

Naturally, we’re all looking for ways to lower our energy bills . There’s a lot of great advice out there, from ditching incandescent lights to getting a heat pump . But there’s also some energy-saving advice that is useless—and a few tips that actually waste energy.…