This might be interesting if you are interested in even more energy saving by adding extra sensors to the tank, and only boosting until you’ve got ‘enough’ hot water.
Also linked from there is my esphome based graphical tank display.
This is an interesting read. How do you measure when the water is not enough via the immersion, or just thinking does it have a thermostat control on it? I don’t have solar or anything, but just thinking about Octopus Agile and heating water overnight (need to consider if overnight electric is cheaper than gas), plus diverting other usage to overnight.
Hi @RogTP. Every immersion heater should have a thermostat to keep it safe. The max temp is typically set to 65C-70C. Now that gas is cheaper, there is less financial incentive to do so, but anything that doesn’t use gas is a win after all, even if costs are the same or slightly higher.