Abstract: An energy conservation moderating system has a DPDT switch (16) in switching communication intermediate a micro controller (8) and a temperature-difference generator (7). The micro controller is in switching control of the temperature-difference generator programmably through the DPDT switch in option to switching control of the temperature-difference generator by a conventional thermostat (1). The micro controller is preferably a Z 8 micro controller having a memory into which an application-specific program in the microcontroller is loaded for programmably plural-cycle short-time on-and-off switching for savings run times intermediate temperature-band on-call extremes and temperature-band mediums of a temperature-band fluctuation selectively.