Air conditioning can send your summer energy bills soaring, but there are smart ways to keep costs in check. Setting your thermostat to a steady, reasonable temperature helps -- but just as important ...
It's always in the middle of a heatwave. Your AC hums to life, but instead of the icy rush you're craving, it pushes out a faint, lukewarm breeze. That's when the dread sets in. Is the unit failing?
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