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Description	There are two main types of heat pumps, vapour compression and absorption heat pumps. In the majority of cases, compression heat pumps, which rely on mechanical energy, are used. Heat pumps reverse the natural heat flow from a higher to a lower temperature. When used for heating, heat pumps transfer heat from the surroundings into buildings. When used for cooling, they transfer heat in the opposite direction. The most frequently used sources of energy for heat pumps are air (Air Source Heat Pump, ASHP) and water (Water Source Heat Pump, WSHP), but also soil and waste can be used. Centralized and decentralized heat pumps are available, whereby the latter are used to heat or cool one room or part of the building only.
Advantages	Low CO2-emissions Allows for heating and for cooling Lower operating costs compared to conventional gas condensing boilers Subsidies
Disadvantages	High investment cost (technology is still very expensive) Limited application of ground water heat pumps Restrictions regarding the use of soil water pumps Decentralized heat pumps: acoustic emission
Application Barriers
Information Sources	http://heatpumpcentre.org http://geo-power.de http://waermepumpe.de http://colt-info.de (decentralized heat pumps)
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Trade:	HVAC technologies

Energy Type:	Electrical
Energy Conversion:	Generating
Season:	Winter, Summer
Building Type:	Single, Collective
System:	System
Category:	Heating, Cooling, Domestic Hot Water

No performance data found for this type.

Initial Cost:	High
Operation and Maintenance Cost:	Medium
Development Cost:	Continuous

This is the chart for costs incurred during the lifecycle of the technology.

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The Design4Energy project aims to address evolutionary life-cycle evolutionary design methodology able to create energy-efficient buildings flexibly connected with the neighbourhood energy system.

BL(Ti)=0.788

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HVAC technologies 3