Glowworm domestic hot water pipe, easy to fit?

[Petewxm]

Hello,
Can anyone help, I have a leak on my boiler, which looks like its coming from the nut on the hotwater connection pipe.
My question is -
Is it easy to replace, looks like one end just push fits and the other is just tighten the nut? Empty the system first?

Thanks
Pete

 

[JohnD]

Is it inside the boiler, or outside?

Post a photo of the leaking part in position on your boiler.