Duct fittings are used primarily to do what in ductwork design?

Duct fittings are used primarily to do what in ductwork design?

• A. Connect and adapt duct sections for airflow paths.
• B. Seal refrigerant lines.
• C. Measure room temperature.
• D. Replace furnace filters.

Answer: (A)

Duct fittings shape and connect the airflow path. They’re the pieces that turn corners, join different duct sections, and transition between sizes so air can move smoothly from the furnace or air handler to rooms throughout the building. By guiding the air and maintaining a continuous, properly sized path, fittings help control direction, distribution, and pressure losses, which keeps the system efficient and effective. Sealing refrigerant lines is a job for the piping side of the refrigerant loop, not the ductwork. Measuring room temperature is done by a thermostat or sensor, not by fittings. Replacing furnace filters relates to filtration components, not to how duct sections are connected and adapted.

Duct fittings shape and connect the airflow path. They’re the pieces that turn corners, join different duct sections, and transition between sizes so air can move smoothly from the furnace or air handler to rooms throughout the building. By guiding the air and maintaining a continuous, properly sized path, fittings help control direction, distribution, and pressure losses, which keeps the system efficient and effective.

Sealing refrigerant lines is a job for the piping side of the refrigerant loop, not the ductwork. Measuring room temperature is done by a thermostat or sensor, not by fittings. Replacing furnace filters relates to filtration components, not to how duct sections are connected and adapted.