Combi boiler central heating inlet valve leaking

[MarcoM]

Hello,

I have a leak in my boiler.
The leak is from the inlet central heating valve. There is water dripping from the top of the valve (where the valve meets the heating pipe).
A maintenance engineer has been and tightened the valve but it is stll leaking. I am wondering now if the valve will need replacing. Would this mean having to drain the whole system or just the boiler?

I am going to ask the guy to come back but I'd like to know how big this job could be. Looking at the boiler it does not look like an easy job.

Thanks

 

[PrenticeBoyofDerry]

It would depend where the boiler was located in relationship to the radiators, whether a complete drain down to replace or maintain valves would be required.
It could be possible to close both flow and return valves, drain done boiler and do maintenance on the seals above the valves, but removing them would require at least draining down the water to the level of the valves or the other option would be to freeze the pipes below valves, using a pipe freezer kit.
But call the plumber back who you undoubtedly paid previously to remedy the issue accordingly.

 

[bazdaman]

It could just be a washer thats gone which is cheap valves can be very expensive if req as most of time you need to buy a full set, what boiler have you got? If its pressurised valves can be changed in 10mins sometimes