I’m getting code together to scrape the Symphony data into OpenHAB. In the interim, we’re watching the stats from the WaterFurnace Symphony web site. We’re running between 1,800 watts and 2,800 Watts to keep the house really warm (72 degrees at the thermostat) with outdoor temps in the 20’s. The loop temperature has stayed pretty consistent as well. It’s not cheap, per se, to heat 4k square feet; but this is a lot better than the power usage with the air exchange heat pump at similar temperatures.