Two main technologies are used A gas absorption heat pump uses natural gas to drive an absorption cycle that moves heat from air, water, or ground into a building Ideal for homes and commercial use
Module 21: Gas-absorption heat pumps - CIBSE Journal
There are also absorption coolers available that work on the.
Having a heat pump and furnace is referred to as a dual fuel system
The electric heat pump and gas furnace dual fuel technology combines cooling and heating performance that you get from a heat. They differ from compression heat pumps driven.