Colin Irvine wrote:

We've adopted the opposite approach. Our boiler has a decent
programmable timer, which is what we normally use. If it's freezing we
flick the boiler to "always on" and let the programmable thermostat do
its stuff.

Errr, I think that is the same, rather than the opposite! ;-)

i.e. I leave the boiler permanently on (it has no programmer of its own,
other than the on/off switch), and set the programmable stat to control
everything.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/