I started monitoring my home energy usage and noticed these spikes of several kW. We chalked it up to an appliance somewhere, maybe the new fridge. Later we went to check the levels in the hot tub—which we haven’t used for *weeks* due to the frigid temperatures—and noticed that the chlorine dispenser was propping up one side of the cover. So for weeks, our hot tub was not properly sealed. Looking today the energy use is *way* less. I don’t even want to know how much this cost…