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We have 58 questions about mending 'gas heat exchanger' in category Heating, Home Heating Systems which have been answered
Siemens RDJ10RF thermostat problem?
Fan tries to run every 15 seconds then stops immediately?
Worcester boiler dripping water?
Worcester Bosch 532/i Combi Boiler?
How do I work my Storad storage heater?
Vaillant ecotec 831 plus?
Remove boiler cover?
Boiler cycle?
Vaillant F22 fault?