The Illinois Read program requires apartment buildings with more than six units (Class 3) to comply with certain standards for energy performance and environmental sustainability. These requirements include: • Achieving an Energy Star rating of 75 or higher: This ensures that the building is performing at or above the national average for energy efficiency. • Installing insulation and sealing air leaks: This helps keep the building comfortable and reduces energy costs. • Installing energy-efficient windows and doors: These help prevent heat loss and provide better comfort and air quality. • Installing high-efficiency heating and cooling systems: These systems use less energy and provide better cooling and heating. • Upgrading lighting to LED fixtures: LED lighting is more energy efficient and provides better light quality. • Installing water-efficient fixtures: This helps reduce water usage and conserve resources. • Implementing green cleaning practices: This helps maintain the health of the building while reducing environmental impacts. • Implementing a comprehensive recycling program: This helps reduce waste and encourages sustainability.