The smith family uses more energy in the summer than the winter what is a good explanation for this?

They use fans and air conditioning in the summer because its hot, which means they use energy and in the winter, there is no need because its cold so less energy.

This happens because of the air conditioner and the fans uses more energy in summer than the heater in winter.

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.