Smart Engine Room controller Engine houses that are controlled in a traditional way, boiler temperature control operation is done through thermostats installed on boilers and pumps. In fact, the temperature of the water is constant unless the operator changes its degree. This is while the building's need for water temperature (the thermal load required by the building) at any moment depends on the internal and external factors of the building, such as the temperature of the outside environment and the conditions inside the building. This is the reason why residents feel hot or cold at times, especially during seasons such as autumn or spring when the environmental temperature changes are more severe. So, in order to be able to keep the temperature inside the building constant within a specific range, the temperature of the circulating water inside the building (boiler water) should be changed momentarily based on the mentioned parameters.