Yang Z. Integrated Design Analysis of Building Service Systems for Energy-Efficient Retrofitting: A Case Study of the Department of Architecture and Built Environment’s E. ON House in the UK. IJEPES [Internet]. 2025 Nov. 18 [cited 2026 Apr. 18];4(3):18-26. Available from: https://wepub.org/index.php/IJEPES/article/view/5850