Create duct systems in Revit

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Once you have placed air terminal components in your Revit model,

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there are two methods you can use to create the duct systems to connect them.

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Which method you use depends on how you select the air terminals.

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For the first method, select a single air terminal with a duct connector, and then, on the contextual ribbon, click Duct.

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To behave properly in the duct system, the connector should have the Flow Direction set to In.

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In the Create Duct System dialog, set the System type to Supply Air, enable Open in System Editor, and then click OK.

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In the contextual ribbon, select Add to System.

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Now, in the drawing area, select theany air terminals you want to add to your system,

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either individually or by using an alternate selection method.

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Next, in the contextual ribbon, click Select Equipment and then select the fan coil unit serving the air terminals.

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Also in the contextual ribbon, click Finish Editing System.

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The graphic displaying the components of your duct system then updates based on the graphic overrides in the duct system Type Properties.

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Use Undo to return to the previous state.

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For the second method to create a duct system, select all your air terminals first.

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In the contextual ribbon, click Duct.

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In the Create Duct System dialog, for the System type, select Supply Air.

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Enable the option Open in System Editor.

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Click OK to close the dialog.

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Then, in the contextual ribbon, click Select Equipment and select the fan coil unit serving your air terminals.

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Now that your duct system is created, you can use the Generate Layout tool.

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Additionally, you can switch to the Duct Systems contextual ribbon to access instance and type properties.

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You are now ready to create additional duct systems in your Revit project using whichever method you prefer.