This hot tub is set up so that every guest gets fresh, clean hot water from an "On-Demand" hot water heater. An On-Demand hot water heater doesn't store hot water in a limited holding tank but instead heats it as needed and you can literally run it continuously. Therefore, when you arrive you can start filling the hot tub, which takes about one hour. After you've settled in and had a cocktail at the Fernwood Tavern, you'll be ready to settle into your freshly drawn hot water.