Which thermostat terminal is commonly used for cooling control?

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Multiple Choice

Which thermostat terminal is commonly used for cooling control?

Explanation:
Cooling is controlled by the terminal that delivers 24V to the outdoor compressor/contactor when the thermostat calls for cooling. In a standard 24-volt setup, R provides the power, and when the cooling demand is set, the thermostat closes the circuit to the cooling terminal, energizing the compressor relay. The other terminals have different roles: W for heat, G for the indoor fan, and R is the power source. So the terminal used for cooling control is the one that completes the circuit to energize the compressor.

Cooling is controlled by the terminal that delivers 24V to the outdoor compressor/contactor when the thermostat calls for cooling. In a standard 24-volt setup, R provides the power, and when the cooling demand is set, the thermostat closes the circuit to the cooling terminal, energizing the compressor relay. The other terminals have different roles: W for heat, G for the indoor fan, and R is the power source. So the terminal used for cooling control is the one that completes the circuit to energize the compressor.

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