FieldFab is a free iPhone application developed by Robert Sale that aims to simplify the process of building ductwork transitions for HVAC installers, particularly retrofitters. This tool eliminates the tedious and labor-intensive process of manual ductwork transitions, allowing users to achieve optimal airflow effortlessly.

Traditionally, installers have had to keep track of various details when cutting each piece, such as which side will have tabs, the length of the tabs, and ensuring that the faces are not crooked or have gaps. However, with FieldFab, all these complexities are simplified.

One of the standout features of FieldFab is the ability to input measurements and view the results in Augmented Reality using the iPhone or iPad's camera. This means that installers can visualize the ductwork transition before cutting any sheet metal, saving them time and eliminating the need to bring large pieces of sheet metal into attics.

FieldFab also offers convenience for sales crews who can take measurements and share them with installers before they even arrive on site. The application includes a sharing feature that allows others to view the transition made in FieldFab by simply sharing a link via text message or email. No attachments required.

For those who prefer attachments, FieldFab also provides the option to export transitions to PDF format.

FieldFab is an open-source application available for download on GitHub, making it accessible to a wide range of users. It offers a practical and efficient solution for HVAC installers, streamlining the process of building ductwork transitions and enhancing overall productivity.