On Fri, 17 Jun 2011 14:09:33 +0100, Fredxx wrote:


Any recommended makes and models?

Honeywell CM907

As with most programmable thermostats setting it up is a shade tedious
but it has several significant advantages in use compared with the
bent metal devices. Firstly the hysterisis is low so it maintains
room temperature well. It also alters the heating on and off times
depending upon room temperature so doing a good job of matching the
required heat profile so it will rarely need to be played with.

Secondly, once set properly if it does need to be altered it is very
easy to manually raise or lower the temperature for that time period
and afterwards it will revert to the program settings. With manual
thermostats the user has to remember to lower them. Some people seem
to think thermostats control the rate of heating and turn them higher
"so the room heats up quickly". This leads to the average temperature
in the house creeping upwards and fuel bills doing likewise.