PHIUS (Passive House Institute United States)

PHIUS (Passive House Institute US) is an organization dedicated to promoting high-performance, energy-efficient building standards based on the Passive House model. This approach focuses on designing structures that require minimal energy for heating and cooling by optimizing insulation, airtightness, windows, and ventilation. The goal is to create comfortable, durable buildings with reduced environmental impact and lower energy costs. PHIUS provides certification, guidelines, and training for architects, builders, and homeowners to implement these sustainable design principles effectively across various climates and building types in the United States.