Abstract: An energy economizing combination includes a switch device coupled to an energy output unit, an energy discharging device coupled to the switch device for energy dissipating purposes, and one or more energy units coupled to the switch device, for selectively receiving energy from the energy output unit. The energy unit includes a switch member coupled to the switch device, and a load facility coupled to the switch member, for being controlled by the switch member. The energy unit includes two pipings coupled between the switch member and the load facility. A heat reservoir and a cold reservoir may further be coupled to the switch device, for receiving and storing cold energy.