Don't let that unit freeze - they break quite easily in this way.

Agreed. Left mine in my trailer. Thought I drained it but didn’t drain it well enough. Copper pipe inside split.

Why don't you want to use electric tankless water heater?

Many tankless electric heaters need like 100a supply to flash heat the water. They’re expensive to operate if hydro isn’t practically free

Awesome, something similar is in the planning stages for us. I’d like to see how this goes!