RT info:eu-repo/semantics/conferenceObject T1 Application Of A Tool To Estimate The Level Of Airtightness Of Residential Buildings A1 Poza-Casado, Irene A1 Fernández Temprano, Miguel Alejandro A1 Meiss Rodríguez, Alberto A1 Rodríguez del Tío, María Pilar K1 airtightness K1 residential buildings K1 pressurization test AB Estimating airtightness is challenging due to variability in influencing factors. Existing models face limitations such as a lack of standardization, sensitivity to construction quality, insufficient representative data, and complexity that reduce their practical utility for designers. This work explores the application of a predictive approach from measured data using Generalized Linear Models (GLIM) that is applicable across diverse construction scenarios. The model incorporates 13 main variables and 4 interaction terms, which explain almost 50% of the variability in airtightness (n50). A typical case study has been chosen in order to show the model’s application, making it user-friendly. This example explores the criteria followed for each variable and building characteristics so that the model can be easily extrapolated to other contexts and applied to other cases. PB ASHRAE YR 2025 FD 2025 LK https://uvadoc.uva.es/handle/10324/83619 UL https://uvadoc.uva.es/handle/10324/83619 LA eng NO AIVC-ASHRAE. IEQ 2025 Conference. Rising to new challenges: Connecting IEQ to a sustainable future. Montreal, Canada: ASHRAE, 2025, p. 1-9 NO Producción Científica DS UVaDOC RD 17-mar-2026