Q: Help! We’ve just had our first heatwave and we want to cool the house—but our central AC is not blowing cold air. I’ve turned the thermostat on and off, but it’s still not cooling the house. Is ...

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As the weather warms up, most homes are already blasting their air conditioners to keep cool, comfortable and of course, sweat-free. But if you’re still feeling hot, you’re probably wondering why your ...