Observed last night in the iOS app:
“Unnamed Motor 6”, previously a 100w load, was running and suddenly drawing ~4,400w. After auditing the house there wasn’t anything else running that isn’t always on. This load is, however, very, very close to the learned “Hot Water Heater”. Checking the learned Hot Water Heater entry, it has disappeared from my learned device list. Confirmed this unidentified device now conflates the Hot Water Heater load by killing the dedicated breaker for the water heater.