Abstract: Heritage buildings in Malaysia are important in view of the fact that it reveals the history of the country besides acting as a landmark and also as tourism booster. Due to many important roles they play, conservation refurbishment is executed to conserve and preserve heritage buildings for future generation and some of them were adapted into new uses such as a museum. POE is executed to evaluate the building performance after they undergone a refurbishment process. Technical performance is one of the elements POE. Previous studies focus on limited technical performance criteria however this study will establish the technical part from a more holistic perspective focuses on a heritage museum building. Thus, this study focuses on reviewing the technical performance criteria of POE on refurbished heritage museum buildings from literature review and also from the semi-structured interview. This study adopts a comprehensive literature review from various sources such as journals, government documents, website documents, books and online books whereas, the semi-structured interview was conducted towards the experts from the museum department. Finding shows that the technical performance criteria for refurbished heritage museum buildings were temperature, relative humidity, lighting, acoustics, indoor air quality, MVAC, security, plumbing, sanitation, electrical services, fire safety, building finishes, structure, energy consumptions, water consumptions, pest control and lastly adaptability.