Tonight will be a good test, low of 20 degrees as we boondock at a casino parking lot in Wisconsin Dells. We'll run on the Espar the entire night.
Noticed on the way up here (about a hour drive), that the motoraide heated the water heater to 135 degrees. But while sitting with just the Espar on, the water heater temp goes down. I'm guessing I need another circulating pump to get more of that heat to the water heater.
Trail and error, but making progress. At least I have a full propane tank and a good working furnace if needed.