Originally Posted by Pikey Dave
What system do you have? Vacuum tubes, home made, proprietary?
I'm looking into it meself, I've got PV & looking to thermal as an add on.
Went for the Velux flat plate system for various reasons. The Velux collectors Are flush fit and being flat plate, they look more like glazed panels up there, rather than solar panels. Also, it was available through my builders merchants who cut me some proper deals.
An eco geek would spec their own componants, not me.
Can stop scrolling through the sensor readings when the sun peeps out.