https://silkflow.co.uk/ukwta-say-water-softeners-central-heating-system/
What do UKWTA say about water softeners and your central heating system. - Silkflow
Sep 10, 2019 - Can I put softened water in my central heating system? Yes! British Standard BS 7593:2006 Code of practice for treatment of water in domestic hot water central...
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