" You are looking at a couple of hundred quid saving on average for a 3-5 bedroom house where there is nobody 8:00 to 15:00 and has reduced occupancy 15:00 - 18:00."
Sod that - It might seem like being tight but our heating gets switched on one hour at a time manually.
Might have to put up with the house being a bit chilly for a few minutes when we first get in but honestly its never been an issue.
I honestly dont see the point of spending this much money for the benefit of the house pre-heating when your on your way home. Though if there is a reason I'd be happy to hear it!