ok hard truths.. im a gas engineer specialise in heating installs and repairs.. in 12 years running my own business i have only come across one chap who accurately records and monitors his usage.. one other records it regularly.. plenty of folk moan about how much their energy bills are
installing this that and the other makes no difference EVERONE uses them like neanderthals
no one knows how their system works or what it costs or what comparisons they should consider..
if you really want to save money and stay warm
spend 200 quid elinating draughts not on some digital thermostat tat..
properly record your energy usage daily then you can make value judgements based on facts not what somebody said on STW
DO NOT turn individual radiators OFF even if you dont use the room
keep doors closed
NEVER turn your boiler off.. NEVER.