"Pandora" wrote in message
...
Does anybody know of a good quality hot water cylinder which has a
facility
to replace the cylinder thermostat with a temperature sensor for better
control?

The hot water system will be unvented and I'll be using a condensing
boiler.

Use a quick recovery cylinder with a condensing boiler. Also use two
cylinder stats to prevent boiler cycling. One top one bottom. The stats
can be strap on. High accuracy stats are not required for a cylinder. Only
when the cylinder drops many degrees, differnce set by the two stats, will
the boiler kick in and re-heat with one long efficient burn.

Albion, Range do suitable cylidners. Travis Perkins do the Telford Typhoon
which is well priced.