Central heating never hitting it's temperature

[Pulsedriver]

Hey folks,

In our house we have a Vailant Ecomax 828/2e combi boiler, and have recently had a Hive thermostat fitted.

What we have noticed is the heating never hits the target temperature, in this instance, set to 19 degrees, admittedly it is only on for a couple of hours in the morning, but it's the afternoon where I am concerned.

For example;

Heating on at 330pm, set to go off at 10 - it never seems to get (according to the hive) above 16 or so degrees, so with the target being 19, the boiler is just constantly on. Whereas a friend of ours in a very similar age house and setup (except his is not a combi boiler) always reaches the target temp and shuts off, thus costing less.
The loft insulation is all done to the new standard, so I can't see what else could cause it? Perhaps the radiators not pumping out enough heat?

 

[Pulsedriver]

Hey guys sorry for late reply, firstly the hive is amazing so definitely whoever thought it may be that, don't worry! It's brilliant
I didn't have a thermostat before having the hive fitted.
Interestingly I turned the boiler temp dial to maximum (was on 70) now on 82. That appears to have made a difference, I accidentally changed to 17 on the hive earlier and the heating was off as it hit that temp earlier. I've now put to 19 so we shall see if it gets there. Will keep updated and check rads

 

[Pulsedriver]

Mickie - It's a combi boiler so it has 2 settings, one for hot water, the other for radiators, the hot water setting is on 50c and is very hot, it was the radiator setting that I changed from 70c to 82c (max)

 

[Pulsedriver]

Suffer from the same problem, Think the loft is badly insulated which doesn't help had british gas around and said yes I would be ok for free insulation but would need to take up all the boarding and remove all the old loft insulation before they would do a complete survey again.

Tempted to pay for a separate company to do it tbh.

I had my loft boarded for £680 inc materials from a local carpenter, he bought the boards and loft stilts to raise the flooring to accommodate the insulation underneath without the need to squash it down. May be worth calling a local carpenter to check prices etc.