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Where Can You Download an HVAC Graphics Library for AHU, VAV, and Equipment Layouts?

November 18, 2025

If you’re working on building automation visuals and need high-quality graphics for AHUs (Air Handling Units), VAV (Variable Air Volume) boxes and other HVAC equipment, there are several excellent places you can download comprehensive libraries—often for free or with minimal cost.

One standout resource is the free HVAC symbol library from Open Automation Software. Their download includes over 2,500 2D and 3D HVAC graphic symbols covering boilers, furnaces, air-conditioners, heat-pumps, heat-exchangers, square & tube ducting and more You simply fill out a form and receive a download link. This library is ideal if you’re designing interfaces for BAS or BMS systems and need ready-to-use visual components.

Another strong option is the free HVAC graphics library from Computrols. Their offering includes Visio stencils and animations for pipe sensors, chillers, air-handling units, duct equipment and more—perfect for drag-and-drop use in BAS visualization.

Additionally, if you’re looking for more advanced or premium vector-based graphics, QA Graphics offers a Vector Symbol Library covering AHU, VAV and other equipment in scalable .SVG and animation formats. While this may not be completely free, they provide a free test module for certain platforms.

Tips for Choosing and Using These Libraries

  • Check the graphic format (PNG, GIF, SVG, animations) and ensure your BAS platform supports it.
  • Ensure the icons are compatible with the equipment types you have (AHU, VAV, chillers, etc.).
  • Verify license terms—some “free” libraries require registration or limit usage.
  • Consider whether 2D is sufficient or you need 3D / vector for better scaling or mobile use.
  • Customize the graphics (colors,labels) to match your building’s branding or system UI.

Bottom Line

For a strong free start: use the Open Automation Software library for wide equipment coverage and the Computrol library for Visio & animation assets. If you need higher-end visuals and scalability (especially for mobile and large displays), then consider QA Graphics’ vector library. With the right graphic set-in place, you’ll save significant time and give your BAS interface a more refined, professional look.

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