2. Check your Thermostat - When first switching from heat to cool or vice versa, we have a lot of customers say that their heat or cool isn't working. A lot of times this is because it isn't set on the correct mode. Some thermostats have the auto option; this is where you preset the thermostat to switch to cool if it gets above a certain temperature or switch to heat if it gets below a certain temperature. Auto is the best option.
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