What is the difference between an air source and ground source heat pump?

Air source heat pumps are most commonly found in 2 forms: air source and ground source. Both operate on the same basis, but as the name suggests, gather their energy from a different source. Other types such as water source are also available but are far less common.


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Our general guidelines when it comes to air source heat pumps vs ground source heat pumps is the capacity requirement of the property. For example, if your property requires less than 16.5kW to heat then an air source heat pump is generally the most suitable and cost-effective option.


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If your property requires more than 16.5kW to heat, then it is worth investigating ground source heat pumps. Of course, there are exceptions to this rule, and all properties are assessed individually to come up with the best suited technology.