Well, here’s where we have to draw the line. A hot tub would start by using well over 3 kWh of power, and probably around 6 kWh. While you CAN configure your battery with up to 12 kWh, the hot tub is probably the most power-hungry, energy-draining thing you are likely to run in your tinyhome and we (honestly) suggest that you seek an alternative power source or make do with a snuggly blanket and a cup of hot chocolate.