Repair is advocated as a circular strategy to improve the environmental performance of products. Whether this holds for very long-lived and energy intensive products has not been addressed. This study compares environmental impacts of two high voltage motors of different energy efficiency and assesses their use extension by repair with life cycle assessment (LCA). Due to high energy use, long lifetime and intensive use, the use phase dominates all environmental impacts, even resource depletion. Therefore, a higher energy efficiency is more beneficial than extending the use by repair, and if the energy efficiency is slightly reduced, the repair is not beneficial. Therefore, product requirements and users and manufacturers of such products should ensure designs with high energy efficiency rather than making the product repairable. Finally, the results highlight the importance of including resource use from electricity production and transmission in LCA of the use extension of energy using products.

维修被提倡作为提高产品环境性能的循环策略。这是否适用于非常长寿命和能源密集型产品尚未得到解决。本研究比较了两种不同能效的高压电机对环境的影响，并通过生命周期评估 (LCA) 评估通过维修延长其使用范围。由于高能耗、长寿命和密集使用，使用阶段主导所有环境影响，甚至资源枯竭。因此，较高的能效比通过维修延长使用更有利，如果能效略有下降，则维修无益。因此，产品要求以及此类产品的用户和制造商应确保设计具有高能效，而不是使产品可维修。最后，