Eco-friendly HVAC and lighting solutions are integral components of sustainable building design, aiming to minimize energy consumption while enhancing comfort and promoting occupant health. In the realm of heating, ventilation, and air conditioning (HVAC), eco-friendly solutions focus on optimizing system efficiency, reducing energy waste, and utilizing renewable energy sources where possible. This includes incorporating high-efficiency HVAC equipment, such as heat pumps and variable refrigerant flow systems, as well as implementing advanced control systems for precise temperature and airflow regulation. Additionally, strategies like natural ventilation and passive cooling techniques help reduce reliance on mechanical HVAC systems, further lowering energy usage. In terms of lighting, eco-friendly solutions prioritize energy-efficient lighting technologies, such as light-emitting diodes (LEDs) and compact fluorescent lamps (CFLs), which consume significantly less energy than traditional incandescent bulbs. Moreover, lighting controls, including occupancy sensors and daylight harvesting systems, enable automatic adjustment of lighting levels based on occupancy and available natural light, further optimizing energy usage. By integrating these eco-friendly HVAC and lighting solutions, buildings can achieve substantial energy savings, lower operating costs, and create healthier and more comfortable indoor environments for occupants. Additionally, these sustainable practices contribute to reducing carbon emissions and mitigating the environmental impact of buildings, aligning with broader goals of environmental stewardship and sustainability.