On 25/03/2018 14:09, Andy Burns wrote:
Dave Plowman wrote:

Never did understand why so many pros used to fit the main stat in the
hall.

If even the hall isn't cold, then every where else should be toasty?
From a different time when the controls were aimed more at comfort
rather than cost saving?

If you have the system well balanced so that the main stat operates an
an efficient boiler interlock (i.e. shutting off the boiler when the
whole house is warm), then having the hall balanced such that it is the
last room to get to full temperature is handy. So as the rooms get to
target temp and their flow reduces via the TRV, more is diverted through
the uncontrolled rad(s) in the hall. It also means that the coolest
space is one you are less likely to be sitting or working in.

--
Cheers,

John.

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