Air Source Heat Pump vs Ground Source Heat Pump

An air source heat pump is comparable with the ground source or geothermal heat pump or geothermal pump, which has become increasingly popular with both environmental agencies and the general pubic. You can have either of these types of pump, but the air source heat pump has a few advantages and disadvantages in comparison to the geothermal model. If you want to compare the two products, then you should understand the differences between them so that you can get a better picture of the benefits of both.

Energy Efficiency

Air source heat pumps and geothermal pumps are both very energy efficient. Unlike the previous attempts at harnessing natural energy, such as solar panels and wind turbines, both types of heat pump use a heating device which works all year round. Air pumps save around 40 percent of heating bills, but geothermal devices can save a lot more, or a lot less, depending upon the model that you go for. In general, the air source heat pump will also reduce CO2 emissions by around 50 percent, which is the same as most geothermal models. Both are equally energy efficient.


Geothermal heat pumps are much more familiar than the air source heat pump, and this is demonstrated in the costs of each. The earth source heat pump varies widely in the models that you can purchase, but you are also able to take advantage of government energy initiatives, which mean that you could save a great deal. On the other hand, air source pumps are of a regular size, and cost several thousand pounds to purchase, which is not completely covered by any government loan. You may be able to take advantage of a local offer, but more likely you will have to shoulder the burden of your air source heat pump by yourself.

In addition to the purchase costs, both air source heat pumps and geothermal pumps carry an additional price in terms of installation costs. The geothermal here is slightly more expensive, as the installation requires digging down into the earth, which can be expensive and also labor-intense. Air pumps have to be fitted to the side of the house, and tubing put into the walls, but this is only a 2 day job at most, and so you are likely to save money on installation costs if you get an air source pump.

Maintenance costs can also vary between the models of pump you purchase, but the geothermal is more familiar, and therefore you mare more likely to find someone who can maintain your pump for a cheap rate. Air source heat pumps are not so widely available, and so you may have problems finding someone who is fully qualified to care for your pump, and to fix it if it becomes damaged.