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AnswerWhat is SCOP (heat pump efficiency)?
SCOP (Seasonal Coefficient of Performance) is a heat pump's real-world efficiency across the year — a SCOP of 3.5 means 3.5 units of heat per unit of electricity.
A higher SCOP means lower running costs; good systems reach 3.5–4.5.
2026 figures, based on Energy Saving Trust, Ofgem & gov.uk data · always confirm with a professional survey.