For many years, gas boilers have been the standard way to heat UK homes. However, air source heat pumps are becoming increasingly popular as homeowners look for more energy-efficient and lower-carbon heating options. So, which is better for your home? The answer depends on your property, existing heating system, energy usage and long-term plans.
How does a gas boiler work?
A gas boiler burns natural gas to heat water, which is then circulated through radiators and used to provide hot water. Modern condensing boilers are considerably more efficient than older boilers because they recover some of the heat that would otherwise be lost through the flue.
Gas boilers are familiar technology and can provide high-temperature heating and hot water quickly.
How does an air source heat pump work?
An air source heat pump extracts heat energy from the outside air and transfers it into your home's heating system. An air-to-water heat pump can provide heating through radiators or underfloor heating and can also heat domestic hot water through a suitable cylinder.
Heat pumps use electricity rather than burning gas or oil. Under suitable conditions, they can produce several units of heat for each unit of electricity they consume.
Heat pump vs gas boiler
| Feature | Air Source Heat Pump | Gas Boiler |
|---|---|---|
| Energy source | Electricity + heat from air | Natural gas |
| Carbon emissions | Generally lower | Higher |
| Heating temperature | Usually lower | Usually higher |
| Hot water | Usually cylinder-based | Can be combi or cylinder |
| Outdoor unit | Required | Not normally required |
| Radiator assessment | Important | Usually less significant |
| Boiler Upgrade Scheme | Potentially eligible | No |
| Long-term technology | Low-carbon heating | Fossil-fuel heating |
Which is cheaper to run?
A heat pump can be very efficient, but electricity currently costs more per unit than gas. The final running cost depends on the heat pump's efficiency, system design, electricity tariff, property heat loss and how the system is operated. Energy Saving Trust currently notes that heat pump running costs can be around the same as a new gas boiler at current energy prices, while good system design and operation can improve performance further.
Which is better for your home?
An air source heat pump may be worth considering if:
- You want to move away from fossil-fuel heating.
- Your property has suitable space for an outdoor unit.
- Your heating system can operate effectively at lower temperatures.
- You are prepared for a different style of heating operation.
- You may qualify for the Boiler Upgrade Scheme.
A gas boiler may still be suitable where a heat pump is not practical or where the homeowner's priorities and property requirements make a boiler more appropriate.
The most important thing: good design
The performance of a heat pump depends heavily on the design and installation. Before recommending a system, Intra Energy Limited assesses the property and considers heat loss, radiator requirements, hot water demand, system capacity and the proposed installation location.
Considering an air source heat pump?
Intra Energy Limited can assess your property, explain the available options and provide a clear quotation. Contact our team to arrange a survey and discuss whether an air source heat pump is suitable for your home.
