Energy-efficient features are design elements and technologies that help reduce energy consumption in buildings and appliances. These can include LED lighting, high-efficiency HVAC systems, and energy-efficient windows that minimize heat loss. By using these features, homes and businesses can lower their energy bills and decrease their environmental impact. Another important aspect of energy efficiency is the use of Energy Star rated appliances, which consume less electricity while providing the same level of performance. Additionally, proper insulation and smart thermostats can optimize energy use, ensuring that heating and cooling systems operate only when needed, further enhancing overall efficiency.