In order to reduce ventilation loads smart ventilation approaches are being developed that use the principle of "equivalence" to allow time shifted ventilation to have the same IAQ effects as constant ventilation. Time shifting allows us to ventilate when temperature and humidity differences between inside and outside are lower, avoid times of peak utility demand and periodic outdoor pollutant events, such as high particle counts during commuter times near busy roads or high ozone concentrations. This presentation discusses the equivalence principle and demonstrates some of the energy and peak demand savings that can be accomplished using smart ventilation.