Yup, they're in parallel according to that drawing. So water runs through both geysers at the same time. So yes, the easiest solution is to block flow in or out of one of them and turn off that element. Unfortunately means crawling around to find a tap or if there isn't one, adding it. But if...
Potentially the temperatures on the thermostats are slightly different? Or the water flows more easily through one so it supplies more of the hot water and has to reheat more frequently?
Could they have piped them in parallel? Would make no sense but that's the only explanation I can think of. So it mixes water from both geysers... worth looking for a shut-off tap on one of them, closing it and turning that geyser element off.
Frigate 0.18 has released with a huge number of updates and improvements. Full GUI camera setup and the ability to make changes without restarting are some of the highlights.
https://github.com/blakeblackshear/frigate/releases/tag/v0.18.0
By panels over the weekend or if I'm home early for some reason. Then use HA to discharge my batteries in the early hours to get batteries to min SOC I want to allow for more charging capacity the next day. Currently have around 5kwh excess capacity after the night is done.
Enjoying the sunshine here in KZN - three 50kwh+ days in a row, solar nearly perfectly matching the calculated values. Just a bit of shading in the afternoon that will disappear soon as well! 4.5kwh/kwp efficiency.
This is my Ambient Weather 2902C (Green) vs my total solar (Yellow) - you can see they track reasonably well. This is for Richards Bay yesterday.
This is the same graph on the 9th of December 2025 (Solar in Red now...). Max Lux is more than double but the equivalent max Solar is only 33%...
I have 2 x 5kwh, 1 x 10kwh, 1 x 14kwh and an old dodgy pouch cell DIY that used to be 10kwh all from different manufacturers and all in parallel. I just have comms to the 14kwh and the rest don't communicate. I haven't had a days trouble. I bought them knowing I wasn't going to get support from...
Smartpad do ESPhome ad Tasmota versions of the wall socket as well:
https://store.smartpad.co.za/index.php/product/esphome-smart-socket-energy-monitoring/