As with many technologies that we use in every-day life, the basic principles of how a heat pump works are simple.

All our surroundings, even a block of ice, has heat. The purpose of a heat pump is to absorb heat in one place where it is plentiful, then to transport and release it in another location where it can be used for space or water heating.

Useful heat can be found in the air outdoors, in the ground, and is present in water, rivers, lakes and the sea. Even on the coldest winter days, sufficient heat is present to warm our homes and offices – what’s more, it is free. All we have to pay for is the machine to recover it and the cost of the energy to run the machine.