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Air-source heat pumps vs Ground-source heat pumps

If you've decided to put a heat pump in your home, you'll need to think about a lot of things before you can finish the job. 

Not only will you have to consider the expenses and benefits of installing a heat pump, but you'll also have to select between the two most frequent installation options.

You'll have to determine whether you want an air or ground source heat pump installed in your property. So, here's a quick rundown to assist you in making an informed decision.

Air Source Heating Pump

How do Heat Pumps work? 

In their most basic form, heat pumps absorb heat from a certain source and convert it to a liquid. This is then compressed even more to raise the temperature before the heat is transferred from the liquid to water, providing warmth to a building (either through radiators or underfloor heating). 

With this in mind, the primary distinction between air and ground-source heat pumps is where the heat is drawn from. For example, air-source heat pumps take heat from the air, whereas ground-source heat pumps extract heat from the ground. 

This may influence your ultimate decision, as not all properties are equipped to absorb and transfer heat from a ground source.

Comparison of Air-source and Ground-source Heat Pumps

Heating Capacity

Another thing to think about is the heating capability of ground- and air-source heat pumps, particularly for homes with particular heating requirements. Larger residences or structures with greater heating needs are better suited for ground-source heat pumps since they typically have higher heating capabilities than air-source heat pumps.

System Lifespan

Planning and investing for the long run requires taking air-source and ground-source heat pump systems' anticipated lifespans into account. Although both types of systems are capable of delivering dependable heating for an extended period, ground-source heat pumps usually have a longer lifespan than air-source heat pumps. Both kinds of heat pump systems can have longer lifespans with proper care and routine repair.

Energy Efficiency

Heat pumps that draw energy from the air or the earth are effective heating devices that can cut energy costs and consumption. The capacity of ground-source heat pumps to extract heat from the comparatively constant temperature of the ground, however, usually gives them a little advantage in terms of efficiency. When compared to air-source heat pumps, ground-source heat pumps can attain greater coefficients of performance (COP), which means they provide more heat output per unit of electricity input.

Installation Costs

In comparison to ground-source heat pumps, air-source heat pumps are typically less expensive initially when it comes to installation costs. The average cost of installing an air-source heat pump is approximately £6,000–8,000, whereas the cost of installing a ground-source heat pump can range from £10,000–£18,000. The primary reason ground-source heat pumps are more expensive is that they require a ground loop installation, which calls for boring holes or excavating trenches for the heat exchange system.

Space Requirements

Installing air-source heat pumps takes up less room than installing ground-source heat pumps. Air-source units take up very little interior space because they are usually installed outside on the outside of buildings. On the other hand, a lot of outside space is needed for the installation of ground loops or boreholes in ground-source heat pumps. Additionally, depending on the location of the property and local laws, excavation for ground-source systems may need planning clearance.

Noise Levels

The operating noise levels of air-source and ground-source heat pumps can differ, which could affect whether or not they are appropriate for residential settings. Ground-source heat pumps are perfect for locations that are noisy-sensitive because they function discretely and silently and don't have any visible external units. On the other hand, residences located in calm neighbourhoods may want to take into account the noise level that air-source heat pumps produce when they are in operation.

Aesthetics

Another thing to think about is how installing heat pumps will look on the outside and landscape of the property, especially for homeowners who care about aesthetics. Ground-source heat pumps provide a covert and unobtrusive heating option because they are installed below and have no apparent outdoor device. Conversely, air-source heat pumps have an external compressor unit that is visible, which could affect how the property looks. To improve curb appeal and overall enjoyment, select a heat pump system that complements the architecture and landscape of the home.

Environmental Impact

Heat pumps that draw energy from the air or the ground both help the environment by cutting down on carbon emissions and the need for fossil fuels for heating. On the other hand, ground-source heat pumps are less detrimental to the environment in terms of aesthetics and noise pollution. While air-source units may produce some noise while operating and have an external compressor unit that is visible, ground-source systems run silently and covertly.

air source heat pump

Which Option Is Right for You?

The decision between ground-source and air-source heat pumps is influenced by several variables, such as available space, money, and environmental concerns.

Consider Air-source Heat Pumps If:

  • There isn't much outside area available for installation.
  • You prioritize upfront cost savings.
  • The outdoor unit's noise is not a problem.

Consider Ground-source Heat Pumps If:

  • There is enough room outside for you to construct a ground loop.
  • Long-term energy savings and efficiency are your top priorities.
  • You want your heating system to be more subdued and quiet.

Contact Us for Air Source Heat Pump Installations

Elements Heating Installations can help if you're thinking about installing a heat pump in Milton Keynes, Banbury, Brackley, or any of the nearby counties in Oxfordshire, Northamptonshire, or Buckinghamshire. For further information or to arrange a free consultation, call us at 07875 344794 or 01280 473772, or send us an email at elementsheatinginstallations@gmail.com. Our staff of knowledgeable specialists can inspect your house and make recommendations for the best heat pump option to effectively and reasonably satisfy your heating requirements.