Glow Worm 30CXi Heat Exchanger Leaking

18 Sep 2020
Reaction score
United Kingdom

been a few years since I had to ask for advice here, I noticed water dripping from my boiler today, called a Plumber out and hes identified the heat exchanger leaking, photo attached (not able to attach a video), he also noticed the pressure is dropping. - Is this the kind of price the part will cost?

In the photo there is a black coloured plastic area where the pipe goes into, I imagine this part will need changing as well, even if its a precaution, what is this part called?

To change both parts, how many hours work should this be?

Thank you.


  • he.JPG
    54.7 KB · Views: 89
Sponsored Links
you will get a brand new set on ebay for around £30 make sure you order the complete HEX with seals, you can just buy the seals but come in packs of 10, it is just a seal that has failed.

Links in this post may contain affiliate links for which DIYnot may be compensated.

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links