Authors: Darshana N V
Abstract: This review paper explores low-cost methods and technologies for monitoring and enhancing indoor air quality (IAQ) in residential and institutional buildings. It highlights the importance of maintaining healthy IAQ for occupant health, comfort, and productivity, especially amid growing urbanization and environmental concerns. The paper systematically examines affordable sensor technologies, measurement approaches, and intervention strategies that provide effective IAQ management without significant financial investment. By evaluating recent innovations and practical applications, this review offers a comprehensive overview of accessible solutions aimed at improving indoor environments, supporting occupant well-being, and advancing sustainable building practices.