Overlaying outdoor temperature is also helpful. One degree HVAC change makes a lot bigger difference when it's 0F (-18C) vs 40F (4C) outside I've seen decent r

Overlaying outdoor temperature is also helpful. One degree HVAC change makes a lot bigger difference when it's 0F (-18C) vs 40F (4C) outside I've seen decent reviews on the "no plumbing required" water meters. Flume has a product available in the U.S. that gets pretty good reviews (https://www.amazon.com/Flume-Smart-Water-Monitor-Detector/dp/B08DX6MP8X https://www.amazon.com/Flume-Smart-Water-Monitor-Detector/dp...).