Plandroid is a simple but powerful ducted air conditioning design and job quoting tool. It allows you to draw a HVAC design superimposed over a floor plan image, using components from a catalog of real parts. It creates take-off lists of those parts, and creates reports from your templates. The program is friendly enough for a casual user, yet powerful enough for the professional designer. It's much simpler than traditional CAD, and makes much more attractive designs - all automatically.