Heat pumps can often be cheaper than oil heating

In many situations, air source heat pumps can provide heating at a lower cost than oil boilers, particularly when systems are designed efficiently.

The key factor is efficiency. Heat pumps typically produce several units of heat for every unit of electricity used.

This efficiency can offset the higher price of electricity compared with oil.

How heat pump efficiency works

Heat pump performance is often described using the Coefficient of Performance (COP).

A COP of 3 means the system produces roughly three units of heat for every unit of electricity consumed.

Example running cost comparison

Actual costs vary depending on electricity prices, oil prices, insulation levels and heating demand.

However, simplified examples can illustrate the difference.

In efficient systems, heat pumps can therefore produce heat at a lower cost than oil heating.

Why oil-heated homes are good candidates for heat pumps

Many oil-heated homes are located in rural areas without access to the gas grid.

These homes often have higher heating costs and can benefit from the efficiency improvements offered by heat pumps.

Replacing oil heating can also reduce carbon emissions and eliminate fuel deliveries.

Factors that affect running costs

• Electricity prices
• Oil fuel prices
• Heat pump efficiency (COP)
• Home insulation levels
• Radiator or emitter sizing

Well-designed systems with appropriate emitters and insulation typically achieve better efficiency.

When oil heating may still be competitive

In some situations, oil heating costs may remain similar to heat pumps, particularly if:

• Electricity prices are high
• Heat pump efficiency is low
• The building has very high heat loss

Accurate heat loss calculations and system design are important when comparing heating options.

Key takeaway

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