A process which is periodically executed by a programmable thermostat of a heating and cooling system which controls the temperature of a defined space within a structure subjected to a variable external environment. The process advances by an increment of time, .DELTA.t, when the set point temperature...http://www.google.de/patents/US5361983?utm_source=gb-gplus-sharePatent US5361983 - Method of maximizing the efficiency of an environmental control system including a programmable thermostat
