On Sat, 03 Oct 2009 10:29:21 GMT, "The Medway Handyman"
wrote:


1) A source of hot water near the tanks;

2) 'Secondary Circulation'; a more complex arrangement where we pump
HW around a loop close to the taps, so the water at the 'ring'
remains hot. This is used in hotels etc to ensure hot water is
reasonable available to individual rooms, even though the hot tank is
distant.
Let's assume we don't want to do this, it's non-trivial, and even less
so to retro-fit.

So let's go with option (1); a source of hot water near the taps.

Option 1a) Instant HW heaters. I dislike these, Dribbly HW flow, and
they remind me of portakabins.

Option 1b) Small immersion-based pressurised cylinders under the sink.
These work well. They store a few litres ( and even more pints! )of
HW under the sink, in a smallish unit. So long as you don't want to
fill a bath from it, it's good ( hand-washing, etc. ) Advantages: Easy
retrofit assuming cold supply is adequate; very close proximity:
instant HW. Disadvantages: Lowish volume of stored HW.

Are those the ones that require a vented hot tap Ron? If so the OP should
consider the hige cost of the taps.

Been looking at these; these don't seem too bad at £71.20 including a
special set of pillar taps.

http://www.hygienesuppliesdirect.com...cts/prod147436

Note that they are designed for a single wash basin but seem to
operate with a combined hot / cold pillar tap. Not a usual setup for
an existing handwash basin.

Might need an angle grinder to modify the tappery-holery arrangements.

Derek