The Boost feature on the TrickleStar Electric Water Heater Controller enables you to switch on your water heater for a specific period which is configurable in the TrickleStar Portal.If Boost is enabled, any schedule to switch off the water heater will not be executed for the duration when Boost is active. However, it is still possible to manually switch off the water heater by the TrickleStar Portal, App or the power button on the Water Heater Controller’s physical unit.