![The main operation features of a household heat pump.](http://static.sciencelearn.org.nz/images/images/000/000/242/full/Household-heat-pump-operation20150923-18999-b8uu6p.jpg?1674163955)
An outline of the main operation features of a household heat pump. The heat pump system is designed around the concept of latent heat of vaporisation. Thermal energy from the outside atmosphere is moved through a working fluid to the air inside the house.