On my boiler, the domestic hot water has got cooler lately, although the thermostat is turned up. I think the DHW heat exchanger needs replacing, it has been done some years ago. I assume, these become furred-up from hard water. Is it possible to soak them in large volumes of kettle de-scaler and then re-use them? I never thought of this before. any advice appreciated thankyou.
- posted
13 years ago