Can I use my existing radiators with a heat pump?

Often yes — many existing radiators work, though some undersized ones need upsizing because heat pumps run at a lower flow temperature.

In more detail

The heat-loss survey identifies which radiators to upgrade — usually a few, not all.

Work it out for your home: try our free heat-pump size & cost calculator →

2026 figures, based on Energy Saving Trust, Ofgem & gov.uk data · always confirm with a professional survey.

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