An Air to Water Heat Pump collects the heat from the outside air and through a refrigeration cycle, generates heat for your homes. There is liquid in the heat pump which will boil at -40 degrees Celsius. This liquid changes into a gas when boiled. This gas is compressed, and as the result, the temperature of the gas increases which is then used to heat your home and hot water for your showers.
Heat Pumps have gained in popularity since the changes to building regulations in 2011. There are many reasons for this.  Heat pumps meet all current and future NZEB (Near Zero Energy Building 2020) regulations, and they are also the most economical way of heating your house, as well as reducing CO2 emissions. By fitting a heat pump you are future proofing your home as fossil fuel options such as oil & gas boilers will be soon banned by the government.