Water dripping from Glowworm Betacom 28A combi boiler

[nerion]

Hi folks, I have a Glowworm Betacom 28A combi boiler. It was fitted about ten years ago and I've never had any issues.

However, over the past few months, I am getting water dripping from one of the "junctions" underneath (see pics).

I left it, thinking the fur build-up might stop the leak, but it's getting worse if anything.

What should I do? Is it just a case of nipping up the nut with a wrench, or is it a plumber job?

Thank you!

PS I assume it's the top nut that's the issue.

 

[terryplumb]

Turn off the mains cold water and drain hot taps. Undo the nut ,some water will leak out be ready to contain it. Clean it all up and fit a new washer.
If that's outside your skill set ,call a plumber.

 

[nerion]

Turn off the mains cold water and drain hot taps. Undo the nut ,some water will leak out be ready to contain it. Clean it all up and fit a new washer.
If that's outside your skill set ,call a plumber.

Thank you so much! That all sounds pretty straight forward. Any idea what kind of washer I'll need?

Also, will I need to undo both nuts, or just the top one?

 

[terryplumb]

Undoing both nuts will allow the fitting to be removed ,and easier to clean. The washer is likely to be a fibre 1/ 2 inch.
Take the existing one to a plumbers merchant to match.

 

[nerion]

Undoing both nuts will allow the fitting to be removed ,and easier to clean. The washer is likely to be a fibre 1/ 2 inch.
Take the existing one to a plumbers merchant to match.

Great stuff. Just one final question: will I need to turn off the electric to the boiler?

 

[terryplumb]

Yes