On Thu, 1 Apr 2021 12:25:06 +0000 (UTC), RJH
wrote:

snip


True, but I also feel guilty about wasting perfectly good drinking
quality water (even though we aren't on a meter). ;-(

Yes me too. I'm not sure it's 'waste' exactly (doesn't it just go round
again?!), but whatever, it grates.

Yes, I believe it does (7 times or so before getting back to the
sea?), but I'm guessing it must 'cost' per loop and I just think how
grateful some would be for fresh water on tap like that. [1]

If it was the smaller (3kW) one and you could get easy access to both
the water supply (above the sink) and electricity (I have on the other
side of the wall) then if use alongside any existing solution, should
give you the best of both worlds?

Given we now have and are enjoying quite a bit of home automation now
(automatic lights in the hall, landing and kitchen), I think I might
like the idea of an 'automatic' hand wash water heater, subject to
being able to use the existing taps without triggering it etc.


Not sure the over-sink is what I'd want,

I agree, unless it could be fitted where it was un intrusive from a
general usage of the basin and conventional taps POV.

but I have space and a 13A socket
under the sink - I'll give it some thought.

I think the 'under sink' solution brings a whole extra set of issues
but I agree, if you have the space, don't mind the cost and work of
ticking all the boxes ... one in-line with any existing hot water
supply as to reduce the warm up time / energy usage (assuming a gas
instant hot water feed and the inline system ok with a hot feed [1]).

Cheers, T i m

[1] I think I remember someone else here feeding a small local water
heater / store from an instant water heater / Multipoint / Combi and
it working ok.