This position paper provides qualitative considerations on the design and 
implementation of a smart heating control system for private households. We 
envision the system to rely on the opportunistic exploitation of information 
made available by existing smart devices. Since heating represents the major 
source of energy consumption in domestic environments, significant energy 
savings may be achieved. The system will opportunistically leverage smart 
devices, such as smart electricity meters and mobile phones, to estimate 
occupants' activity patterns and thus optimize the heating control strategy. 
By avoiding the need for installing customized sensing devices in the home, 
our solution may significantly lower the adoption barrier of smart heating 
solutions.