very energy efficient way of transferring heat from one place to another. They take waste heat from one source, such as the ground or ambient air, and transfer it to a space that requires heating. They use very little energy, so are cheap to run, and their carbon emissions are very low. Project Cost* £41,000 Project: Heat pumps Annual cost savings*: £20,000 Annual CO2 saving*: 83 tonnes Payback 2 years *Projected cost/savings