High efficiency square diffuser design emphasizes maximally controlling air - flow with minimal energy usage. These diffusers have best internal features, including air vanes and streamlined channels that are precisely angled for better airflow and lower resistance. Advanced aerodynamic principles guarantee the even distribution of airflow which improves system efficiency. Increased Thermal Comfort and Indoor Air Quality also add to the benefits of high – efficiency square diffusers in buildings, but so does less energy required for air distribution, making it cost effective and a sustainable option.