Heat Pumps
Heat pumps use continuous accumulation of low-level ambient
warmth, for example in the air which is heated by the sun, to
create concentrated heat within a storage tank, which then serves a
conventional or under-floor central heating system. This greatly
reduces the carbon footprint of heating requirements, and lowers
the bills that attend traditionally-fuelled heaters. Ground-source
heat pumps recover heat (from the sun), stored in the ground.