Is a Heat Pump Better Than Central Heating?

Efficiency Comparison

Heat pumps are significantly more efficient than traditional central heating systems. A modern gas boiler operates at 85-95% efficiency, meaning up to 15% of energy is wasted. An air source heat pump achieves 300-400% efficiency (COP of 3-4), producing 3-4 kW of heat for every 1 kW of electricity used.

This efficiency advantage translates directly into lower energy bills. While gas may be cheaper per unit than electricity, the heat pump's superior efficiency means it uses far less energy overall. A well-designed heat pump system typically costs 20-40% less to run than a gas boiler.

Running Costs

Annual heating costs for a typical 3-bedroom semi-detached home: Gas boiler: £800-£1,200. Oil boiler: £1,200-£1,800. LPG boiler: £1,400-£2,000. Air source heat pump: £500-£800. Ground source heat pump: £400-£700.

These figures demonstrate that despite electricity costing more per unit than gas, the heat pump's efficiency more than compensates. For homes currently on oil, LPG, or electric heating, the savings are even more dramatic.

Environmental Impact

A gas boiler produces around 2-3 tonnes of CO₂ per year. An air source heat pump using grid electricity produces about 1-1.5 tonnes, and this figure continues to fall as the UK electricity grid decarbonises. By 2030, heat pumps could be virtually zero-carbon.

If you pair your heat pump with solar panels or a green electricity tariff, you can achieve zero-carbon heating today. This is impossible with any fossil fuel boiler, making heat pumps the clear winner for environmentally conscious homeowners.

Comfort and Convenience

Heat pumps provide a more consistent, even temperature throughout your home compared to the on-off cycling of a gas boiler. Instead of short bursts of intense heat followed by cooling periods, a heat pump maintains a steady warmth that many homeowners find more comfortable.

Modern heat pump systems offer smart controls, smartphone apps, and weather compensation that automatically adjust heating output based on outside temperatures. They also provide cooling in summer (with air-to-air systems), something no gas boiler can do.