Components Inside a Heat Pump. A heat pump works much the same way an air conditioning unit works with a few differences. In the cooling mode it transfers heat outside from the inside and in the heating mode it transfer heat from the outside to the inside*.
Wikimedia Commons: Union Hill, Illinois. Union Hill is a village in Kankakee County, Illinois, United States. The population was 66 at the 2000 census. It is included in the Kankakee-Bradley, Illinois Metropolitan Statistical Area.
According to the 2010 census, Union Hill has a total area of 0.05 square miles (0.13 km2), all land. As of the census of 2000, there were 66 people, 28 households, and 19 families residing in the village.