Unvented system services

[Style22]

Hi, I've moved into a flat which has an unvented hot water system and have been told by 3 different plumbers (only 1 has g3) that there's no need to service it. Is this correct?
I've also just noticed water leaking from underneath the expansion tank and been told this isn't a serviceable part so will need replacing. Is this true and how much should I expect to pay?
Thanks in advance

 

[ShaunCorbs]

no incorrect needs to be done yearly

as for the repair dont know havent seen it sorry best get a couple of prices etc

 

[townfanjon]

If the water is leaking from the expansion vessel down to rust , not an actual fitting or connection, replace it ASAP .
Definitely should be serviced , I am a bit worried about the one that has G3 .

 

[Style22]

no incorrect needs to be done yearly

as for the repair dont know havent seen it sorry best get a couple of prices etc

Thanks for your reply.
Could you tell me what an unvented service would consist of please because the plumber told me there's nothing to really check

 

[Dan]

Engineers can't really provide such guidance so easily. Why did the plumbers say it doesn't need servicing? And why three of them? Are you struggling to get somebody to actually come and have a look at it?

 

[Style22]

Engineers can't really provide such guidance so easily. Why did the plumbers say it doesn't need servicing? And why three of them? Are you struggling to get somebody to actually come and have a look at it?

The plumber who fitted it was quite abrupt and said he hasn't got time to service it. I spoke with 2 other plumbers (who don't have g3) which said it didn't really need servicing, just check black plastic cone shape section isn't wet inside. Spoke to another plumber a couple of days ago who says he has g3 and he also said that there's nothing to really service. I'm confused

 

[Dan]

I can see your reasoning for asking then.
It's over my head to be fair I'm not an engineer.

Frustrating that the guy who fitted it couldn't service it!!

 

[townfanjon]

. I'm confused

I would be , I would sack all three of them .

 

[Style22]

I would be , I would sack all three of them .

How do I find a decent plumber that has g3?

 

[townfanjon]

How do I find a decent plumber that has g3?

We have a section on here somewhere . Where are you based ?

 

[Dan]

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[Style22]

We have a section on here somewhere . Where are you based ?

I am based in Dover

 

[AWheating]

It's more like a safety check tbh. For the system to work safely it has to operate at certain pressures and have correctly working controls installed in the correct way. Cleaning the strainer, checking supply pressure setting, safety devices operate, expansion vessels are charged etc... Some areas with hard water may need immersion descaling. The cylinders instructions will give you advise on maintenance.

 

[Style22]

It's more like a safety check tbh. For the system to work safely it has to operate at certain pressures and have correctly working controls installed in the correct way. Cleaning the strainer, checking supply pressure setting, safety devices operate, expansion vessels are charged etc... Some areas with hard water may need immersion descaling. The cylinders instructions will give you advise on maintenance.

Thank you. That was very helpful