Evaluation of the climate impact of OOAKI’s sofa reupholstery relative to purchasing a new sofa. The furniture sector is characterized by high material intensity and climate impacts concentrated in upstream production processes. Extending the service life of existing furniture is therefore a key strategy for reducing greenhouse gas emissions while advancing circular economy objectives. This report evaluates both the climate impact and circularity performance of replacing sofa slipcovers through OOAKI’s reupholstery service, compared to the alternative of purchasing a new sofa. A life cycle assessment (LCA) was conducted to quantify climate impacts associated with sofa reupholstery and new sofa purchase. Four upholstery fabrics offered by OOAKI were analyzed, representing recycled synthetic material, synthetic material, natural fibers, and mixed fiber compositions. The assessment includes fabric production, confection, packaging, transport, and end-of-life treatment of the replaced upholstery. In parallel, a C-metric was applied to assess circular performance by capturing the extent to which existing sofa frames are retained in use and material flows are preserved through extended product lifetimes. Results show that reupholstering a sofa results in approximately 82–117 kg CO₂e per sofa, depending on fabric choice and end-of-life assumptions. When reupholstery substitutes for the purchase of a new sofa, climate impacts are reduced by 28–57%, depending on the relative lifetimes of the upholstery and sofa frame. The C-metric analysis demonstrates substantially higher circularity when sofa frames remain in use, however circularity declines as the sofa core depreciates and replacement slipcovers made from virgin (non-circular) material constitute an increasingly larger proportion of the product’s total value. The findings show that sofa reupholstery can deliver significant climate benefits while simultaneously improving material circularity, especially when a product retains its value well over time and is updated with circular replacement parts. The work in this report was supported by Vinnova, Sweden’s Innovation Agency grant 2022-001716.