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.
Roselle has a station on Metra's Milwaukee District/West Line, which provides daily rail service between Elgin and Chicago Union Station. As of the census of 2000, there were 23,115 people, 8,443 households, and 6,239 families residing in the village.