Ground source heat pumps are a very successful renewable technology used in many countries, so why are they less popular in the UK? With the current focus on going green, and the environment being a 'hot topic' at the moment, it seems that ground source heat pumps have been overlooked in the UK. They clearly have the potential to greatly help the UK to reduce its environmental impact. This book looks into existing case studies of heat pumps in the UK to determine whether they should be widely installed in domestic properties. Different factors are considered such as financial viability, carbon dioxide emissions and running costs. The conclusion is that GSHP can greatly benefit the environment as well as the occupants.