Area duct HVAC is a free mobile application designed for engineers in the HVAC field. The app is useful for those involved in the design and installation of ventilation systems. It allows users to easily determine the area of air ducts and various shaped pieces, which is especially important in construction.

The app supports various parts, including rectangular and round pieces such as straight ducts, bends, reducers (transition), caps, tee, offset, hood, rain cap, and deflector. With the app, users can save the results of calculations in CSV format and send them via email, Bluetooth, and other platforms for further work in the editors of tables.