This bill, known as the "Housing Temperature Safety Act of 2025," mandates the establishment of a three-year pilot program by the Secretary of Housing and Urban Development. The program will provide grants to public housing agencies and owners of covered federally assisted rental dwelling units to install and test temperature sensors. The core objective is to ensure these units maintain compliance with established temperature requirements and to evaluate the effectiveness of sensor technology. Within 180 days of enactment, the Secretary must define eligibility criteria for participation, aiming for a diverse representation of geographic regions, climate zones, and housing types, while also testing various sensor functionalities, including internet connectivity. Participating entities must obtain written resident permission for sensor installation and monitor the data. They are also required to collect and retain records of temperature-related complaints and violations , with specific definitions for these terms to be provided by the Secretary. The bill outlines strict data collection protocols, including the protection of personally identifiable information . It mandates both an interim evaluation within 12 months and a final evaluation 36 months after the pilot's conclusion. These evaluations will analyze the impact of sensors on temperature-related issues, identify barriers to their full utility such as broadband access, and compare different sensor technologies based on factors like cost and features. The Act authorizes necessary appropriations for grants, program administration, and technical assistance.