"F" wrote in message
...
Our old Landis & Gyr programmer is audibly creaking and, as I'm ordering
from Screwfix, I might as well replace it.

Have you considered a Danfoss TP9. This is particularly suitable if you do not
have a fully pumped system.

Have you looked at the Honeywell CM67 programmable thermostats?

--

Michael Chare