ISO 10263-4:2009规定了一种统一的试验方法，用于测量在特定环境中运行的供暖、通风和空调系统对操作员环境温度的影响。该方法可能无法确定操作员的完整气候环境，因为这也会受到来自机器上其他来源的热负荷的影响，例如太阳能加热。ISO 10263-6将与ISO 10263-4:2008结合使用，以更准确地确定操作员外壳上的完整热负荷。 ISO 10263-4:2008规定了机器操作员外壳加热、通风和空调系统的最低性能水平。

ISO 10263-4:2009 specifies a uniform test method for measuring the contribution to operator environmental temperature provided by a heating, ventilating and air conditioning system operating in a specific ambient environment. The method might not determine the complete climatic environment of the operator since this is also affected by heat load from sources other than those on the machine, for example solar heating. ISO 10263-6 is to be used in conjunction with ISO 10263-4:2008 to determine more accurately the complete heat loading on the operator enclosure. Minimum performance levels for the machine's operator enclosure heating, ventilating and air conditioning systems are established in ISO 10263-4:2008.