BoilerFaultCodes 8.13 Medium
Your boiler is struggling because there is air trapped inside the system or water is struggling to flow through it properly, causing rattling or banging sounds.
Book a service
This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.
Technical description: Heating Body Noise
Typical repair cost £100-250 (including labour)
DIY fix possible
Check your boiler pressure gauge to ensure it is between 1 and 1.5 barBleed all radiators in the house to release any trapped airEnsure all thermostatic radiator valves are fully open to allow water to circulate
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 8.13 — no call-out fees, no surprises.
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Chaffoteaux Britony Duo 55 is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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