Main Combi Boiler DHW Diaphragm Repair Kit – Fits 24SE, 24HE, 30HE – Part 5111137

Got a Main Combi boiler acting up?

This is the DHW diaphragm repair kit you need.

It's a brand new, genuine Main part (number 5111137) and fits the 24SE, 24HE, and 30HE models.

It's the diaphragm for the domestic hot water, so if your water isn't heating right or the boiler's behaving oddly, this might just do the trick.

It's for a storage tank water heater type setup and has an excellent A+++ energy efficiency rating.

Simple, essential repair part.