The best thing about making enough food to feed an army you get lots of left overs, and then you get to eat them instead of cooking a meal from scratch.
Which is a good job really because I had to feed the starving hero today - the heat exchanger works! We have a warm bathroom!
Then the heat coils were installed inside and the copper pipes pushed through then attached to flexible hoses to feed through the living room wall to the bathroom to be connected to the pump.
Complete with flames!
But that should mean that we can throw a couple of logs into the fire and safely leave it overnight knowing that the pump is going to kick in and not just leave the water boiling in the heat exchanger.
Here is the very technical test to see that the switches work - one hot mug, one cold mug. James May and his man lab have nothing on this!