As the demand for energy-efficient and animal welfare-focused farming practices grows, maintaining optimal indoor environmental quality (IEQ) in swine facilities presents significant challenges. This paper examines the state-of-the-art methods and models designed to simulate thermal comfort in pigs while comparing these methodologies to those used for assessing thermal comfort in humans, particularly in residential buildings. By integrating physiological responses alongside key environmental parameters such as ventilation, temperature, humidity and airflow, these models are essential for managing heat and cold stress, optimizing energy use, and ensuring animal welfare in swine farming. The paper provides an overview of existing thermal models for both pigs and humans, focusing on how each group approaches heat transfer processes—conduction, convection, radiation, and evaporation—and how they integrate environmental variables. This comparative analysis aims to highlight how established human thermal comfort models might inform and enhance approaches for pig farming, given the methodological similarities in assessing IEQ and energy efficiency. Additionally, research gaps are identified in pig thermal modelling, particularly regarding the integration of advanced sensor technologies for precise environmental control and demand-controlled ventilation systems. The insights gained informs future research aimed at developing climate-adaptive thermal management systems in swine farming, drawing on advancements from the residential building sector to bridge the gap between animal welfare, IEQ, and energy use.