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Hi, hoping someone can help. I have a glowworm 18hx boiler. Its about 7 years old. I had a service booked recently because it was weeping from one corner. An independent gas safe engineer came round and advised there was condensation leaking within the boiler. He advised that the best course of...

Hi, hoping someone can help. I have a glowworm 18hx boiler. Its about 7 years old. I had a service booked recently because it was weeping from one corner. An independent gas safe engineer came round and advised there was condensation leaking within the boiler. He advised that the best course of...