Boiler pressure advice

[Funkyboy]

Hi All,

I've got a Worcester 4000. Never had a combination boiler before. After 14 mths message came on saying pressure was 0.9 and to top up. I topped it to 1.3. Four months later (today 28th of February) it's reading 1br. Boiler has been used pretty much constantly through the winter. Is this normal? I've checked all radiator points for leaks but not found anything.
The boiler is on my elderly mum's so not worried about it.

Thanks

 

[ShaunCorbs]

Yep perfectly fine to loose 0.5 bar in 14 months

I’m sure it’s serviced ?

 

[Chuck]

What pressure does it rise to when the central heating is on and hot?

 

[Funkyboy]

What pressure does it rise to when the central heating is on and hot?

It goes to 1.7

 

[Chuck]

It goes to 1.7

Okay, that shouldn't be high enough to cause the pressure release safety valve to operate, which is another way systems can sometimes lose water.