how efficient is gas compared with electric for cooking?

[kristen]

So when I have main-pressure hot water, shortly [i.e. hot water will be potable, whereas at the moment there could be dead animals floating in the header tank FATIK] should I fill the kettle from the hot water tap - to take advantage of the heat in my Thermal Store before boiling with the kettle? (No mains gas here ...]

[djh]

should I fill the kettle from the hot water tap

I've been wondering whether it makes sense to go even further. If the thermal store is run hot, there'll probably be a TMV between the thermal store and the hot tap, so maybe it would pay to have a separate Very Hot Water tap for filling the kettle, like those very expensive 'butler taps' some makers offer. I guess the question would be how much water cools in the pipe between uses.

[kristen]

"... like those very expensive 'butler taps' some makers offer"

I quite fancy having a butler ...

"I guess the question would be how much water cools in the pipe between uses"

No more than the DHW circuit I assume ... so perhaps no worse off there (up to the DHW temperature at least ...).  I'll ponder the length of my DHW run from Thermal Store to Kitchen

[hawkie]

This time of year I use a flat bottomed Stainless steel kettle on top of the clearview wood burner, obviously it depends on how hard I am running the burner, sometimes only takes 5 mins other times takes 20. we also use the stove for cooking soup, stew, casseroles, etc we are really pleased with this set up

[Ivan]

That's not a bad idea, and reminded me that I need to do this too.