What's The Difference Between Ground Source Heat Pumps and Air-to-Air Heat Pumps?

Heat pumps are an increasingly popular solution for heating and cooling homes & buildings. They’re energy-efficient, environmentally friendly and can save homeowners money on their energy bills. However, not all heat pumps are created equal. There are two main types of heat pumps: ground source (also known as geothermal) and air-to-air. In this blog post, we'll explore the differences between these two types of heat pumps.

Ground Source Heat Pumps

Ground source heat pumps (GSHPs) use the constant temperature of the earth to heat and cool buildings. They work by circulating a combination of water and antifreeze through pipes buried in the ground. This absorbs heat from the earth in the winter and releases heat back into the earth in the summer. The hot or cold water is then used to heat or cool the building via a heat exchanger.

One of the main advantages of GSHPs is that they are highly energy-efficient. Because the ground temperature is constant throughout the year, the system does not have to work as hard to heat or cool a building. Additionally, because the system is underground, it is not subject to the same temperature fluctuations as air-source heat pumps.

Another advantage of GSHPs is that they are environmentally friendly. They do not produce any emissions and they can be powered by renewable energy sources such as solar or wind power.

Air-to-Air Heat Pumps

Air-to-air heat pumps (AAHPs) work in the winter by extracting heat from the air from outside and transferring it inside. In the summer, they reverse the process to provide cooling. They’re typically installed outside the building and are connected to a duct system that distributes hot or cold air throughout the building.

One advantage of AAHPs is that they are typically less expensive to install than GSHPs. They don’t require any digging or drilling and they can often be installed in existing ductwork.


Both ground source and air-to-air heat pumps are effective heating and cooling solutions for homes and buildings. However, each has its own advantages and disadvantages. GSHPs are highly efficient and environmentally friendly, but they can be expensive to install and may not be suitable for all properties. AAHPs are less expensive to install but are less efficient and can be noisy. Ultimately, the choice between the two will depend on your specific needs.

If you’re interested in installing a heat pump but need help deciding which one, contact us today and we’ll be happy to help!

Boosted Heating and Plumbing
Office 9, Unit 5 first floor
Antler Business Park, Bruntcliffe Way
Morley, Leeds, LS27 0JG
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Phone: 0113 440 2025
Email Address: Contact@boostedhp.co.uk
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