The big advantage is that they require only an outdoor unit rather than having to dig up the garden, making the installation quicker and cheaper.
They have the same performance and efficiency of a ground source heat pump, typically providing £4 of free energy for every £1 of electrical energy you put into it.
This technology has been proven and even works in temperatures as low as -10°C. You may not have heard of it because it is still quite a new technology but you will hear more about it over the coming years.
Call today 01858 433333 or phone Lewington Solar Renewable Energies Manager on 07725783565.