Ground-source or water-source heat pumps can be used in more extreme climates than air-source heat pumps, and customer satisfaction with the systems is very high. A new type of heat pump for residential systems is the absorption heat pump, also called a gas-fired heat pump.bsorption heat pumps use heat as their energy source, and can be driven with a wide variety of heat sources. For more information on these specific types of heat pumps, go to: 1  Air-Source Heat Pumps. 2  Ductless Mini-Split Heat Pumps. 3  Geothermal Heat Pumps.