Got a “new high energy use” alert – took a look at the app and saw 6,000 watts more use than typical. Made no sense. Went through the house looking for anything and none of the usual suspects were on….
Then I went outside and saw some droplets of water splashing over the gutter (it was a clear day).
Sure enough, the rooftop water heater had sprung a leak, causing our water pumps to run non stop and the electric water heater to try and keep up. Shutting off the water immediately stopped the leak and the energy use.
I honestly don’t know how long it would have taken to notice this leak… could have been days or even weeks – instead, it was 30 minutes start to finish.