“…Some researchers found the socio-economic factors, such as aging (Mahapatra et al, 2008), household income (Kasanen et al, 1989), number of children (Wilhite et al, 1999) or economic factors such as high operation, maintenance and fuel costs (Mahapatra et al, 2008;Caird et al, 2008). Others emphasized the influence of energy saving from the perspective of environmental consciousness (Keirstead, 2007;Caird et al, 2008) or the motivating role of governmental subsidies and grants (Michelsen et al, 2013;Wallace et al, 2010). Other former models found that the breakdown of former heating product motivates end customers for purchase (Mahapatra et al, 2008;Hallin, 1989;Stolyarova et al, 2015).…”