During seasonal start-up, a pool heater should run how?

The correct response indicates that during the seasonal start-up of a pool heater, it should operate continuously until the thermostat is satisfied. This approach ensures that the heater can efficiently raise the pool water to the desired temperature. Continuous operation allows for steady heating, which is essential for achieving optimal water temperature quickly, especially after a period of inactivity when the water has likely cooled significantly.

Starting the heater and allowing it to run uninterrupted until the thermostat’s setpoint is met helps to avoid temperature fluctuations and maintains a more consistent heating process. Once the thermostat is satisfied, the heater will shut off automatically, conserving energy and reducing unnecessary wear on the equipment.

In contrast, intermittent or cyclical operation—such as running for one hour on and one hour off—can lead to inefficiencies and prolonged heating times. Running the heater continuously for a set 24 hours may be excessive unless it is necessary to achieve the desired temperature. Continuous operation until the thermostat reaches the set point strikes a balance between efficiency, effectiveness, and equipment care.