ISO 13612适用于交替或同时运行的用于空间加热和冷却的热泵、热泵热水器（HPWH）以及空间加热和冷却与生活热水生产相结合的热泵，其中相同的热泵用于空间加热和冷却以及生活热水加热。 ISO 13612-1:2014规定了空间供暖和生活热水生产所需的输入、计算方法和输出，以及以下热泵系统的控制: 电动蒸汽压缩循环（VCC）热泵；内燃机驱动的VCC热泵；热驱动蒸汽吸收循环（VAC）热泵。 ISO 13612-1:2014规定了单独使用热泵或与其他热发生器组合使用的建筑物加热和冷却系统的设计和尺寸标准。其中包括:水？水盐水？水制冷剂？水（直接膨胀系统）；空气空气空气水合并；由电力或天然气驱动的系统。 ISO 13612-1:2014在供热设计中考虑了附属系统（如生活热水、工艺热）的供热要求，但不包括这些系统的设计。它只涉及热泵、与热量分配和排放系统（如缓冲系统）的接口、整个系统的控制以及系统能源的处理。

ISO 13612 is applicable to heat pumps for space heating and cooling, heat pump water heaters (HPWH), and heat pumps with combined space heating and cooling and domestic hot water production, in alternate or simultaneous operation, where the same heat pump is used for space heating and cooling and domestic hot water heating. ISO 13612-1:2014 establishes the required inputs, calculation methods, and required outputs for heat generation for space heating and domestic hot water production and control of the following heat pump systems: electrically driven vapour compression cycle (VCC) heat pumps; combustion engine-driven VCC heat pumps; thermally-driven vapour absorption cycle (VAC) heat pumps. ISO 13612-1:2014 specifies the design and dimensioning criteria for the heating and cooling systems in buildings using heat pumps alone or in combination with other heat generators. These include the following: water?water; brine?water; refrigerant?water (direct expansion systems); air?air; air?water; combined; systems driven by electricity or gas. ISO 13612-1:2014 takes into account the heating requirements of attached systems (e.g. domestic hot water, process heat) in the design of heat supply, but does not cover the design of these systems. It covers only the aspects dealing with the heat pump, the interface with the heat distribution and emission system (e.g. buffering system), the control of the whole system, and the aspects dealing with the energy source of the system.