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by Parmenion
Thu Sep 10, 2009 10:00 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Efficiency
Replies: 0
Views: 2561

Efficiency

Hello all. Does anyone know if it is cheaper to keep a combi central heating system on at a low setting 24 hours a day or have it come on twice a day at a higher temperature?
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