The electricity consumption of the fan alone, without the cooling or heating components operating, depends on various factors, including the type of fan, its speed settings, and the efficiency of the HVAC system.
In most residential HVAC systems, the fan used for air circulation is typically a blower fan, which is driven by an electric motor. The power consumption of the fan motor can vary based on its design, capacity, and the speed setting at which it operates. Generally, fan motors are designed to be energy-efficient, especially in newer HVAC units.
At lower fan speeds, the electricity consumption of the fan alone tends to be relatively low. However, as you increase the fan speed to higher settings, the power consumption of the fan motor increases accordingly. Higher fan speeds may be necessary in some situations to achieve better airflow or to distribute conditioned air to different areas of the house more effectively.
While the fan alone may not use as much electricity as when the cooling or heating components are also operating, it is still a part of the overall energy consumption of the HVAC system. The exact amount of electricity used by the fan alone will vary depending on the specific HVAC unit and its settings.
To determine the energy consumption of the fan alone in your HVAC system, you can refer to the manufacturer's specifications or consult the system's documentation. Additionally, you may consider using an energy monitoring device or a smart thermostat with energy tracking features to get real-time information on energy consumption for different components of your HVAC system, including the fan.