Residential HVAC Installation Practice Exam

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In a split central air-conditioning system, where is the low voltage wire from the thermostat typically run to?

  1. Condensing unit

  2. Ductwork

  3. Attic

  4. Air handler

The correct answer is: Air handler

In a split central air-conditioning system, the low voltage wire from the thermostat is typically run to the air handler. This is because the air handler acts as the central distribution point for conditioned air in the system. The thermostat communicates with the air handler to control the heating and cooling functions, making it a crucial component in the system. The air handler then sends commands to the condensing unit and other parts of the HVAC system to regulate the temperature in the house effectively. Therefore, running the low voltage wire from the thermostat to the air handler allows for seamless communication and coordination within the system.

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