Revit MEP 2025 (How to create ducting system)

In this tutorial, you will learn how to create a ducting system using Revit MEP 2025. Revit MEP is an advanced software that can accurately design a ducting system, and this tutorial will guide you through the process. However, simply creating a ducting system in Revit is not the only important aspect; increasing energy efficiency is also crucial. This is because, in buildings, the maximum cost comes from energy bills, which are largely due to HVAC systems. Therefore, if we have an optimized HVAC system, it can decrease energy bills and increase energy efficiency

When creating an energy-efficient ducting system, several key factors should be considered to optimize performance, reduce energy consumption, and lower operational costs. Below are the essential things to keep in mind:

1. Proper Sizing

2. Minimize Bends and Turns

3. Seal and Insulate

4. Balanced Airflow

5. Use of Energy-Efficient Equipment

6. Regular Maintenance

7. Zoning Systems

8. Smart Controls

9. Material Selection

10. Design for Future Needs

Steps for Creationg Ducting sytem using Revit 2025

Step 1: Load and Place the Air Handling Unit (AHU)

To begin creating your ducting system, you’ll need to place an Air Handling Unit (AHU) in your Revit model. Here’s how to do it:

1. Navigate to the Systems Tab: On the Revit ribbon, locate and click on the Systems tab.
2. Access Mechanical Equipment: In the HVAC panel, select the Mechanical Equipment tool.
3. Load the AHU Family: If the Air Handling Unit family isn’t already available in your project, click Load Family. Browse the Revit library, select the appropriate AHU family, and load it into your project.
4. Place the AHU: Switch to a suitable view, such as a floor plan or 3D view, and click to position the AHU outside the building in your desired location.

Step 2: Draw the Ductwork

With the AHU in place, the next step is to create the ducting network that will distribute air throughout the system.

1. Select the Duct Tool: Go back to the Systems tab and click on Duct in the HVAC panel.
2. Set Duct Properties: In the properties palette, choose the duct type (e.g., rectangular or round) and specify the size that suits your design requirements.
3. Draw the Ducts: In your chosen view, click to define the start and end points of each duct segment. As you draw, Revit automatically adds fittings like elbows and tees where needed to connect the duct runs smoothly

Step 3: Add Duct Fittings

While Revit typically adds standard fittings automatically as you draw ducts, you may need to manually insert specific fittings to meet unique design needs.

1. Use the Duct Fitting Tool: On the Systems tab, select the Duct Fitting tool.
2. Choose and Place Fittings: Pick the fitting type you need—such as a custom tee, elbow, or transition—from the options available, and place it into the duct system at the appropriate location

Step 4: Place Air Terminals and Close Open Ends

Finally, you’ll need to terminate the duct system properly by adding air terminals and closing any unused duct ends.

1. Add Air Terminals: On the Systems tab, click the Air Terminal tool in the HVAC panel. Select the desired type (e.g., supply diffusers or return grilles), and place them in the appropriate locations within the building, such as ceilings or walls.
2. Connect Air Terminals: Draw ducts from each air terminal to connect them to the main duct runs, ensuring a complete airflow path.
3. Cap Open Ends: For any duct ends that remain open and aren’t connected to air terminals or other components, select the duct, go to the Modify | Duct tab, and click Cap Open Ends to automatically add caps.