Commercial HVAC System Diagram
In an office building, a packed conference room and a quiet corner office need very different amounts of cooling at the same time. ArcSite's commercial HVAC system diagram shows how one air handling unit feeds VAV boxes that open or close to match each zone's load.
Key Features
This commercial HVAC system diagram includes:
- Air handling unit (AHU) with outside and return air intakes
- Filter and cooling coil
- Supply fan on a VFD (variable frequency drive)
- Fully open VAV box in a high-load zone
- Partly open VAV box in a moderate-load zone
- Zone thermostats wired to each VAV box
- Diffusers and a return air path
Every zone gets the same 55°F air, so each VAV box controls its room by air volume, not temperature.
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Design tips
Key Considerations When Designing a Commercial HVAC System
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HVAC & Mechanical
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Frequently asked questions
What does a VAV box do?
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