Energy demand for space heating is estimated using a discrete-continuous ch
oice model which focuses on the relationship between the choice of heating
equipment and energy consumption. The model is estimated on Norwegian micro
data, and the two stages of the model are estimated simultaneously. The ca
pital cost and the operating cost of the heating systems are both found to
have a significant impact on the choice of heating system. Furthermore, the
results show that household characteristics are important variables in res
idential energy models. Energy price elasticities and income elasticities a
re also estimated.