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We have 33 questions about mending 'leak heat exchanger' in category Heating, Home Heating Systems which have been answered
Vaillant ecotec 831 plus?
Siemens RDJ10RF thermostat problem?
Remove cover off gas boiler?
Greenstar 24Ri boiler, fast flashing - can I reset?
Worcester 30 Cadillac combi boiler won’t fire up and the EA?
Worcester boiler dripping water?
How to fix my fireplace?
Remove boiler cover?
Oil fired boiler thermostat?