Overview
- Met Office guidance prioritises heating the living room during the day and the bedroom before sleep if you cannot warm the whole home.
- Health professionals say indoor temperatures should not fall below 18°C for older people, those with limited mobility, or anyone with underlying conditions.
- Energy specialists urge using timers and steady settings rather than on/off “boosts,” which force systems to work harder and waste energy.
- Common errors include heating unused rooms, placing thermostats where they misread temperatures, and running boiler flow settings unnecessarily high.
- For combi boilers, lowering the flow temperature to about 60°C can maintain comfort while reducing strain and potentially cutting costs, with other systems requiring engineer advice.