Gas Boiler vs Heat Pump Calculator

With a modern heat pump achieving a seasonal efficiency (SCOP) of 3.2 to 3.8, it delivers over 3 units of heat per unit of power. As the spark spread narrows and off-peak tariffs are utilized, heat pump running costs are on par with or cheaper than gas boilers.

The UK Government's Future Homes Standard prohibits fossil fuel gas boilers in new-build properties, establishing low-carbon heat pumps as the primary heating standard across the British Isles.

Replacing an existing domestic gas boiler with a heat pump avoids approximately 2.0 to 3.5 tonnes of CO2 emissions annually in an average semi-detached home, decarbonising as the UK electricity grid becomes greener.

Yes, immediately. Homes relying on heating oil (kerosene) or bulk LPG face volatile fuel delivery costs. Converting to a heat pump routinely lowers annual heating bills by 30% to 50% while eliminating oil tank maintenance.

Completely decommissioning your gas connection and removing the gas meter saves approximately £110 to £130 annually in avoided standing charges alone, eliminating gas safety inspections.

In most UK properties, the majority of copper pipework and radiators can be retained. Upgrading a few key radiators to larger double-panel (Type 22) units ensures the system runs at high seasonal efficiency.