Certainly! The main unit of the Solar iBoost+ includes a button labeled "Boost." Each time this button is pressed, the immersion is heated by grid power for an additional 15 minutes, and this can continue for up to 2 hours.
The remaining time is displayed on the unit, but if the thermostat temperature is reached before the set time, it will automatically turn off. If an iBoost Buddy is connected, the Boost button can also be pressed remotely from within the home.