Setting your thermostat a little warmer in the summer and a little cooler in the winter can help save you money on your heating and cooling. Depending on where you live, you're probably starting to turn on the heat at home again. Flicking your thermostat back on, however, isn't always so simple. Depending on what kind of HVAC system you have, and your tolerance for cold temperatures, there are different ways to use your thermostat to your advantage. It's more than just a number...

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