Running costs depend on your home size, insulation, electricity tariff and heat pump efficiency. For a 3-bed semi using a COP of about 3.5, you might expect around £1,200–£1,500 annually.
A heat pump extracts warmth from the outside air, raises its temperature via a refrigerant, and transfers it into your heating system — even when it’s cold outside.
It depends on property floor area, heat loss rate, insulation and emitter type. Use: Size (kW) = Floor Area (m²) × Heat Loss Factor (W/m²) ÷ 1000 as a rough guide — then consult an MCS-certified installer.
Radiators designed for high-temperature boilers might underperform with a heat pump. Upgrading to larger or low-temperature radiators helps maintain comfort and improves efficiency.
Yes — mistakes include wrong sizing, inadequate insulation, incompatible radiators, and non-certified installers. Correct design and certification ensure better results.
Ensure the installer is MCS-certified, provides a detailed survey, shows previous projects, gives a full quote (including insulation or radiator upgrades) and manages grant eligibility.
Yes. Solar PV can power your heat pump, reducing grid electricity use. For maximum benefit, consider battery storage and ensure system design aligns with your usage and property.
Modern air-source heat pumps are designed to work efficiently down to about -15°C and beyond — though performance and architecture (radiators/emitter) matter for peak winter performance.
