Namespaces
- Autodesk.Revit.ApplicationServices
- Autodesk.Revit.Attributes
- Autodesk.Revit.Creation
- Autodesk.Revit.DB
- Autodesk.Revit.DB.Analysis
- Autodesk.Revit.DB.Architecture
- Autodesk.Revit.DB.DirectContext3D
- Autodesk.Revit.DB.Electrical
- Autodesk.Revit.DB.Events
- Autodesk.Revit.DB.ExtensibleStorage
- Autodesk.Revit.DB.ExternalService
- Autodesk.Revit.DB.Fabrication
- Autodesk.Revit.DB.IFC
- Autodesk.Revit.DB.Infrastructure
- Autodesk.Revit.DB.Lighting
- Autodesk.Revit.DB.Macros
- Autodesk.Revit.DB.Mechanical
  - AirCoolingCoilType Enumeration
  - AirFanType Enumeration
  - AirHeatExchangerType Enumeration
  - AirHeatingCoilType Enumeration
  - AirSystemData Class
  - AnalyticalSystemDomain Enumeration
  - ComponentClassification Enumeration
  - ConditionType Enumeration
  - Duct Class
  - DuctFittingAndAccessoryConnectorData Class
  - DuctFittingAndAccessoryData Class
  - DuctFittingAndAccessoryPressureDropData Class
  - DuctFittingAndAccessoryPressureDropItem Class
  - DuctFlowConfigurationType Enumeration
  - DuctInsulation Class
  - DuctInsulationType Class
  - DuctLining Class
  - DuctLiningType Class
  - DuctLossMethodType Enumeration
  - DuctPressureDropData Class
  - DuctSettings Class
  - DuctShape Enumeration
  - DuctSizeIterator Class
  - DuctSizes Class
  - DuctSizeSettingIterator Class
  - DuctSizeSettings Class
  - DuctSystemType Enumeration
  - DuctType Class
  - EquipmentClassification Enumeration
  - FlexDuct Class
  - FlexDuctType Class
  - IDuctFittingAndAccessoryPressureDropServer Interface
  - IDuctPressureDropServer Interface
  - MechanicalEquipment Class
  - MechanicalEquipmentSet Class
  - MechanicalEquipmentSetType Class
  - MechanicalFitting Class
  - MechanicalSystem Class
  - MechanicalSystemType Class
  - MechanicalUtils Class
  - MEPAnalyticalSystem Class
  - MEPBuildingConstruction Class
  - MEPBuildingConstructionSet Class
  - MEPBuildingConstructionSetIterator Class
  - MEPHiddenLineSettings Class
  - MEPSection Class
  - MEPSpaceConstruction Class
  - OccupancyUnit Enumeration
  - ReturnAirflowType Enumeration
  - RiseDropSymbol Enumeration
  - Space Class
  - SpaceFilter Class
  - SpaceSet Class
  - SpaceSetIterator Class
  - SpaceTag Class
  - SpaceTagFilter Class
  - SpaceTagType Class
  - SpaceType Enumeration
  - SystemCalculationLevel Enumeration
  - SystemZoneData Class
  - SystemZoneElementType Class
  - WaterChillerType Enumeration
  - WaterLoopData Class
  - WaterLoopType Enumeration
  - Zone Class
  - ZoneElementDomainData Class
  - ZoneEquipment Class
  - ZoneEquipmentBehavior Enumeration
  - ZoneEquipmentData Class
  - ZoneEquipmentHvacType Enumeration
- Autodesk.Revit.DB.Plumbing
- Autodesk.Revit.DB.PointClouds
- Autodesk.Revit.DB.Steel
- Autodesk.Revit.DB.Structure
- Autodesk.Revit.DB.Structure.StructuralSections
- Autodesk.Revit.DB.Visual
- Autodesk.Revit.Exceptions
- Autodesk.Revit.UI
- Autodesk.Revit.UI.Events
- Autodesk.Revit.UI.Macros
- Autodesk.Revit.UI.Mechanical
- Autodesk.Revit.UI.Plumbing
- Autodesk.Revit.UI.Selection
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DuctLossMethodType Enumeration

Revit 2026 API

DuctLossMethodType Enumeration

An enumerated type listing all duct loss calculation methods for a connector.

Namespace: Autodesk.Revit.DB.Mechanical
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.0.4.0 (26.0.4.0)

Syntax

public enum DuctLossMethodType

Public Enumeration DuctLossMethodType

public enum class DuctLossMethodType

type DuctLossMethodType

Members

Member name	Value	Description
Coefficient	6	Duct loss method depends on the loss coefficient.
NotDefined	0	Duct loss method is undefined.
SpecificLoss	4	Duct loss method is specified.

Reference

Autodesk.Revit.DB.Mechanical Namespace

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