Air conditioning and climate change.

Air conditioning systems use energy to remove heat from a given location, transferring it to the exterior in the form of exhaust. Some of the energy is invariably wasted as heat, and this additional heat must also be exhausted. Thus, air conditioning results in net heat release to the environment. The warming effect is aggravated, moreover, because additional forms of energy such as electricity are used to power air conditioners. Generating and transmitting this electricity entails further production of waste heat, as well as greenhouse gas (GHG) emission. Demand for air conditioning peaks along with other demand for electricity during the summer months. Auxiliary generators used to meet peak demand are less efficient and often burn fossil fuels.