Sample set #4 design, drawings and specifications for Sample #5: drawings and specifications for an owner built project Sample See this page for budgeting HVAC design fees and for budgeting indoor climate systems. Project Documentation assembly and installation of equipment for Radiant Based HVAC Systems for residential structures and commercial building classifications A through E and F3 AutoCAD HVAC drafting samples - Andy's Best CAD AutoCAD Heating, Ventilation and Air Conditioning drafting samples. Andy's Best CAD. AutoCAD HVAC drafting samples. Home Services 3D Services Projects Procedure Experience Samples Pricing Links Contact. Heating, Ventilation and Air Conditioning drafting samples The AutoCAD HVAC sample drawings are available to view in 3 different file formats.