高铁和动车组列车的车厢空调温度在夏季设定为24℃至26℃[1]，采用全车集中统一控制方式[1]，乘客无法自主更改整体车厢温度设定[1]。与之不同，普速列车的夏季温度标准范围更宽，设定在24℃至28℃[1]。
虽然乘客不能调节车厢整体温度，但仍有个人调节的方式可用[1]。乘客可以操控座位处的个人通风装置进行调节[1]，或通过扫描座椅扶手上的铁路畅行码在线反馈车厢温度需求[1]。此外，为确保乘客上车即感受到舒适温度，动车组在出库前采取分阶段预冷流程[1]：发车前约一小时，车厢温度被调整至25℃至26℃[1]；在抵达始发站前，系统会根据车内外温度自动进行动态调节[1]。
Train operators employ centralized climate control systems that prevent individual passengers from modifying overall cabin temperatures, though personal comfort adjustments remain available through designated features. High-speed railways and EMU trains maintain air conditioning temperatures between 24°C and 26°C during summer operations [1], while conventional trains operate within a broader range of 24°C to 28°C [1]. These settings are managed through unified, train-wide systems under operator control, meaning passengers cannot alter the centralized temperature settings for their entire car [1].
To accommodate individual comfort preferences, passengers may adjust personal ventilation devices located at their seats [1]. Additionally, the railway system provides a feedback mechanism whereby passengers can scan QR codes on seat armrests to report temperature concerns online [1]. Before departure, EMU trains undergo a two-phase pre-cooling process to ensure comfortable temperatures upon boarding: approximately one hour before departure, cabin temperatures are adjusted to 25°C to 26°C, and upon arrival at the originating station, temperatures are automatically calibrated based on both indoor and outdoor conditions [1].