ANSI/ASHRAE/ACCA标准180规定了最低暖通空调检查和维护要求，以保持系统在新建和现有商业建筑中实现可接受的热舒适性、能效和室内空气质量的能力。2018年对标准180的修订包括使标准更易于实施的变更；添加了新的定义，以区分检查、维护、保养和维修任务；并修改了流程部分，以更好地阐明如何启动和实施维护计划。

ANSI/ASHRAE/ACCA Standard 180 establishes minimum HVAC inspection and maintenance requirements that preserve a system's ability to achieve acceptable thermal comfort, energy efficiency, and indoor air quality in new and existing commercial buildings.This 2018 revision of Standard 180 includes changes that make the standard easier to implement; adds new definitions to differentiate between inspection, maintenance, service, and repair tasks; and modifies the process section to better clarify how to initiate and implement a maintenance program.