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What is the Running Cost of an Air Source Heat Pump?
Posted in
13/05/2021

What is the Running Cost of an Air Source Heat Pump?

If you’re looking to save money on your energy bills, air source heat pumps are a smart investment. They generate heat by extracting it from the air outside your home, which is then converted to hot water for use in your taps or radiators.

However, when you’re calculating the overall savings, it’s important to factor in air source heat pump running costs, as this post will explore…

Why do air source heat pump have running costs?

It may seem counter-intuitive that the equipment that’s meant to save you energy actually uses energy itself. Solar panels, for example, are simply installed on your roof and require no energy to harness the sun’s UV rays.

However, air source heat pumps work a little differently. While solar panels let photons from the sun’s rays do most of the work, air source heat pumps actively extract heat from external air as a fluid. That fluid is then compressed to increase its temperature.

While it’s intended to save energy, this process admittedly requires a certain amount of power, which explains the running cost for your air source heat pump.

How much are they?

Air source heat pump running costs vary quite a bit depending on two main factors:

  • The efficiency of your pump – Like any appliance in your home, some air source heat pumps are designed to be more efficient than others. More modern, efficient models will usually use less energy and therefore have lower running costs. This is also known as its Coefficient of Performance (COP) – a value correlating to how much energy a pump can generate per unit of energy it uses.
  • The amount of heat required – The less you use your heat pump, the lower its running costs. This can also be affected by the efficiency of your home, with well insulated houses requiring less heat from their pump, for example. On average, UK homes demand just over 10,000 kWh per year.

Using the information above, you can get a better idea of general air source heat pump running costs. An air source heat pump with a COP of 2.5 will be able to cater for the average heat demands of a UK home using around 4,000 kWh.

With the average cost of electricity at around 14p per kWh, that would result in an annual running cost of just £560.

How does that affect the overall saving?

While adding £560 per year in electricity might not sound like a great way to save money, it’s worth remembering that the heat you generate will replace heat you would have needed from your gas boiler. On top of that, you will receive payments from the Renewable Heat Incentive (RHI), typically amounting to between £1,341 and £1,586 per year.

With the RHI payments more than covering the cost to run your air source heat pump, it’s clearly a cost-effective option as well as helping the environment.

Find out more about air source heat pumps

If you want a greener, more cost-effective way to heat your home, speak to the renewable energy experts at NBEC. Operating throughout South Yorkshire, we can help you minimise air source heat pump running costs with a modern, energy-efficient heat pump that’s best suited to your home.

We can also assist you with your application for a government grant. Start your application today to take the first step to lower energy bills.

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