I have fitted one of your evacuated tube panels and pump kits in 2011 and have been very pleased.
A neighbour is keen to install one and I was wondering how much an 18 tube direct flow panel and pump/expansion tank kit now costs, with delivery to PL21 9QE area.
Have there been any changes? I can only see 2 temperature sensors on your diagram instead of the 3 I have.
I will source the hot water tank separately.