What does ACCA Manual D focus on?

ACCA Manual D specifically addresses residential duct design, providing guidelines and standards for the design and installation of ductwork in residential buildings. This manual is crucial for ensuring efficient airflow, system performance, and comfort in homes. It lays out methodologies for calculating duct sizes, determining friction rates, and designing for proper air distribution within the residential space.

The focus of Manual D is on optimizing duct systems to reduce energy waste and improve indoor air quality. Proper duct design is vital for the overall efficiency of HVAC systems, which is why this particular area is emphasized in the manual.

The other choices represent important aspects of building and environmental performance but do not align with the specific focus of ACCA Manual D. Energy management strategies, interior design guidelines, and HVAC performance standards encompass broader categories that include various elements of building efficiency and functionality, yet they do not concentrate particularly on the duct design process as the correct choice does.