House Size has a dual effect on daily minimum and daily
maximum consumption. Daily minimum consumption is much
more correlated with House Size during the winter (House Size
explains 21% of the variability in winter minimum consumption,
while it explains only 2% of the variability in summer minimum).
On the other hand, House Size has a much larger impact on daily
maximum consumption during the summer compared with winter.
Both observations can be explained by the relationship of House
Size with heating and cooling loads, and the nature of these two
loads. First, larger houses require more heating and cooling loads,
both because they have more volume to condition, and because
they have higher heat loss or gain with the outside. Also, heating
load tends to have a more consistent nature, especially when systems
such as radiant heating are used. Cooling load, on the other
hand, tends to have a more intermittent nature, since the air
conditioner compressor only needs to run intermittently to produce
cool air