PHIUS (Passive House Institute US)

PHIUS, or Passive House Institute US, is an organization that promotes energy-efficient building design aimed at significantly reducing energy consumption and environmental impact. It sets standards for "Passive House" construction, which emphasizes high insulation levels, airtightness, and the use of energy-efficient systems to create comfortable living spaces without relying heavily on heating or cooling. Buildings certified by PHIUS are designed to use very little energy, making them sustainable and cost-effective in the long run, while also improving indoor air quality and comfort for occupants.