ISO 15927-4:2005规定了一种方法，用于构建适用于评估供暖和制冷平均年能量的适当气象数据小时值的参考年。代表平均条件的其他参考年可用于特殊目的。ISO 15927-4:2005本部分中的程序不适用于构建极端或半极端年份，以模拟寒冷年份的水分损害或能量需求。 不包括气象仪器和观测方法。

ISO 15927-4:2005 specifies a method for constructing a reference year of hourly values of appropriate meteorological data suitable for assessing the average annual energy for heating and cooling. Other reference years representing average conditions can be constructed for special purposes. The procedures in this part of ISO 15927-4:2005 are not suitable for constructing extreme or semi-extreme years for simulation of, for example, moisture damage or energy demand in cold years. Meteorological instrumentation and methods of observation are not covered.