The Passive House (PH) standard is a voluntary quality assurance standard focused upon maximising the health and wellbeing of occupants, whilst reducing space heating demand to a very low level. To meet the PH standard, well-defined criteria have to be met. However, given literature that suggests a ‘performance gap’ for energy savings, the question remains, how well do PH dwellings perform in situ? This paper presents results from in situ building fabric thermal performance measurements, along with a comparison between the design intent and the measured space heating energy used by over 2000 newly built and retrofitted PH dwellings. The results reveal the in situ thermal performance of the building fabric is close to the design predictions. Within space heating measurements, a standard deviation of up to 50% has to be attributed to the broad spectrum of user behaviour; this is not specific for PH, but a general observation. Despite this, the average values for the PH developments ranged within the uncertainty of the demand calculations. With over 2000 PH dwellings averaging a space heating energy consumption of 14.6 kWh/(m²a), the in situ performance is close to the original design intent and extraordinary low compared to the consumption in ordinary buildings. The results suggest the PH standard is capable of producing dwellings in a verifiable manner. This means, on average, the in situ thermal performance of the building fabric and the energy consumption for space heating match the design intent, i.e. there is no significant ‘performance gap’.

被动房（PH）标准是一项自愿性质量保证标准，旨在最大程度地提高乘员的健康和福祉，同时将空间供暖需求降低到非常低的水平。为了满足PH标准，必须满足明确定义的标准。但是，鉴于文献表明在节能方面存在“性能差距”，因此问题仍然存在，PH住所的现场性能如何？本文介绍了现场建筑织物热性能测量的结果，并比较了2000多个新建和改建的PH住宅的设计意图和所测得的空间加热能量。结果表明，建筑织物的原位热性能接近设计预测。在空间供热测量中，最多50％的标准偏差归因于广泛的用户行为；这不是专门针对PH，而是一般性观察。尽管如此，PH发展的平均值在需求计算的不确定性范围内。在2000多个PH住宅中，平均空间供暖能耗为14.6 kWh /（m² a），现场性能接近原始设计意图，与普通建筑相比，其性能非常低。结果表明，PH标准能够以可验证的方式生产房屋。平均而言，这意味着建筑织物的原位热性能和空间供暖的能耗符合设计意图，即没有明显的“性能差距”。