“…One or more of the generic risks such as lack of access to information about technology, lack of availability of skilled personnel, and low product and performance reliability in addition to other risks were identified in many sources that investigated energy efficient technologies or renewable energy technologies or even both of them combined together in one study such as in [9,10,11,12,13]. On the other hand, other sources investigated one or more specific risks for HVAC technologies such as in [14,15,16] which investigated risks like presence of system constraints and Surface condensation and mold growth in radiant systems, chilled beams, and underfloor air distribution systems. More details on generic and specific risks and its sources identified in this study can be found in [8].…”