HVAC System Types¶

What kind of systems are available in EnergyPlus?

EnergyPlus HVAC systems input is flexible, so many different types of systems can be built using the basic available components. There are also compound components which represent common equipment types, and HVACTemplate systems which simplify the input for specific systems. This list gives an overview of HVAC objects in EnergyPlus:

HVAC Templates

• HVACTemplate:Thermostat

• HVACTemplate:Zone:IdealLoadsAirSystem

• HVACTemplate:Zone:FanCoil

• HVACTemplate:Zone:PTAC

• HVACTemplate:Zone:PTHP

• HVACTemplate:Zone:Unitary

• HVACTemplate:Zone:VAV

• HVACTemplate:Zone:VAV:FanPowered

• HVACTemplate:Zone:WaterToAirHeatPump

• HVACTemplate:System:Unitary

• HVACTemplate:System:Unitary:AirToAir

• HVACTemplate:System:VAV

• HVACTemplate:System:PackagedVAV

• HVACTemplate:System:DedicatedOutdoorAir

• HVACTemplate:Plant:ChilledWaterLoop

• HVACTemplate:Plant:Chiller

• HVACTemplate:Plant:Tower

• HVACTemplate:Plant:HotWaterLoop

• HVACTemplate:Plant:Boiler

• HVACTemplate:Plant:MixedWaterLoop

Zone HVAC Forced Air Units

• ZoneHVAC:IdealLoadsAirSystem

• ZoneHVAC:FourPipeFanCoil

• ZoneHVAC:WindowAirConditioner

• ZoneHVAC:PackagedTerminalAirConditioner

• ZoneHVAC:PackagedTerminalHeatPump

• ZoneHVAC:WaterToAirHeatPump

• ZoneHVAC:Dehumidified:DX

• ZoneHVAC:EnergyRecoveryVentilator

• ZoneHVAC:EnergyRecoveryVentilator:Controller

• ZoneHVAC:UnitVentilator

• ZoneHVAC:UnitHeater

• ZoneHVAC:OutdoorAirUnit

• ZoneHVAC:TerminalUnit:VariableRefrigerantFlow

Zone HVAC Radiative/Convective Units

• ZoneHVAC:Baseboard:RadiantConvective:Water

• ZoneHVAC:Baseboard:RadiantConvective:Steam

• ZoneHVAC:Baseboard:RadiantConvective:Electric

• ZoneHVAC:Baseboard:Convective:Water

• ZoneHVAC:Baseboard:Convective:Electric

• ZoneHVAC:LowTemperatureRadiant:VariableFlow

• ZoneHVAC:LowTemperatureRadiant:ConstantFlow

• ZoneHVAC:LowTemperatureRadiant:Electric

• ZoneHVAC:HighTemperatureRadiant

• ZoneHVAC:VentilatedSlab

Zone HVAC Air Loop Terminal Units

• AirTerminal:SingleDuct:Uncontrolled

• AirTerminal:SingleDuct:ConstantVolume:Reheat

• AirTerminal:SingleDuct:VAV:NoReheat

• AirTerminal:SingleDuct:VAV:Reheat

• AirTerminal:SingleDuct:VAV:Reheat:VariableSpeedFan

• AirTerminal:SingleDuct:VAV:HeatAndCool:NoReheat

• AirTerminal:SingleDuct:VAV:HeatAndCool:Reheat

• AirTerminal:SingleDuct:SeriesPIU:Reheat

• AirTerminal:SingleDuct:ParallelPIU:Reheat

• AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction

• AirTerminal:SingleDuct:ConstantVolume:FourPipeBeam

• AirTerminal:SingleDuct:ConstantVolume:CooledBeam

• AirTerminal:DualDuct:ConstantVolume

• AirTerminal:DualDuct:VAV

• AirTerminal:DualDuct:VAV:OutdoorAir

• ZoneHVAC:AirDistributionUnit

Fans

• Fan:ConstantVolume

• Fan:VariableVolume

• Fan:OnOff

• Fan:ZoneExhaust

• FanPerformance:NightVentilation

• Fan:ComponentModel

Coils

• Coil:Cooling:Water

• Coil:Cooling:Water:DetailedGeometry

• Coil:Cooling:DX:SingleSpeed

• Coil:Cooling:DX:TwoSpeed

• Coil:Cooling:DX:MultiSpeed

• Coil:Cooling:DX:TwoStageWithHumidityControlMode

• CoilPerformance:DX:Cooling

• Coil:Cooling:DX:VariableRefrigerantFlow

• Coil:Heating:DX:VariableRefrigerantFlow

• Coil:Heating:Water

• Coil:Heating:Steam

• Coil:Heating:Electric

• Coil:Heating:Fuel

• Coil:Heating:Desuperheater

• Coil:Heating:DX:SingleSpeed

• Coil:Heating:DX:MultiSpeed

• Coil:Cooling:WaterToAirHeatPump:ParameterEstimation

• Coil:Heating:WaterToAirHeatPump:ParameterEstimation

• Coil:Cooling:WaterToAirHeatPump:EquationFit

• Coil:Cooling:WaterToAirHeatPump:VariableSpeedEquationFit

• Coil:Heating:WaterToAirHeatPump:EquationFit

• Coil:Heating:WaterToAirHeatPump:VariableSpeedEquationFit

• Coil:WaterHeating:AirToWaterHeatPump

• Coil:WaterHeating:Desuperheater

• CoilSystem:Cooling:DX

• CoilSystem:Heating:DX

• CoilSystem:Cooling:Water:HeatExchangerAssisted

• CoilSystem:Cooling:DX:HeatExchangerAssisted

Evaporative Coolers

• EvaporativeCooler:Direct:CelDekPad

• EvaporativeCooler:Indirect:CelDekPad

• EvaporativeCooler:Indirect:WetCoil

• EvaporativeCooler:Indirect:ResearchSpecial

Humidifiers and Dehumidifiers

• Humidifier:Steam:Electric

• Dehumidifier:Desiccant:NoFans

• Dehumidifier:Desiccant:System

Heat Recovery

• HeatExchanger:AirToAir:FlatPlate

• HeatExchanger:AirToAir:SensibleAndLatent

• HeatExchanger:Desiccant:BalancedFlow

• HeatExchanger:Desiccant:BalancedFlow:PerformanceDataType1

Unitary Equipment

• AirLoopHVAC:Unitary:Furnace:HeatOnly

• AirLoopHVAC:Unitary:Furnace:HeatCool

• AirLoopHVAC:UnitaryHeatOnly

• AirLoopHVAC:UnitaryHeatCool

• AirLoopHVAC:UnitaryHeatPump:AirToAir

• AirLoopHVAC:UnitaryHeatPump:WaterToAir

• AirLoopHVAC:UnitaryHeatCool:VAVChangeoverBypass

• AirLoopHVAC:UnitaryHeatPump:AirToAir:MultiSpeed

Variable Refrigerant Flow Equipment

• AirConditioner:VariableRefrigerantFlow

Air Distribution

• AirLoopHVAC

• AirLoopHVAC:OutdoorAirSystem:EquipmentList

• AirLoopHVAC:OutdoorAirSystem

• OutdoorAir:Mixer

• AirLoopHVAC:ZoneSplitter

• AirLoopHVAC:SupplyPlenum

• AirLoopHVAC:SupplyPath

• AirLoopHVAC:ZoneMixer

• AirLoopHVAC:ReturnPlenum

• AirLoopHVAC:ReturnPath

Pumps

• Pump:VariableSpeed

• Pump:ConstantSpeed

• Pump:VariableSpeed:Condensate

• HeaderedPumps:VariableSpeed

• HeaderedPumps:ConstantSpeed

Solar Collectors

• SolarCollectorPerformance:FlatPlate

• SolarCollector:FlatPlate:Water

• SolarCollector:FlatPlate:PhotovoltaicThermal

• SolarCollectorPerformance:PhotovoltaicThermal:Simple

• SolarCollector:IntegralCollectorStorage

• SolarCollectorPerformance:IntegralCollectorStorage

• SolarCollector:UnglazedTranspired

• SolarCollector:UnglazedTranspired:Multisystem

Plant Heating and Cooling Equipment

• Boiler:HotWater

• Boiler:Steam

• Chiller:Electric:EIR

• Chiller:Electric:ReformulatedEIR

• Chiller:Electric

• Chiller:Absorption:Indirect

• Chiller:Absorption

• Chiller:ConstantCOP

• Chiller:EngineDriven

• Chiller:CombustionTurbine

• ChillerHeater:Absorption:DirectFired

• ChillerHeater:Absorption:DoubleEffect

• HeatPump:WaterToWater:EquationFit:Heating

• HeatPump:WaterToWater:EquationFit:Cooling

• HeatPump:WaterToWater:ParameterEstimation:Cooling

• HeatPump:WaterToWater:ParameterEstimation:Heating

• DistrictCooling

• DistrictHeating

Condenser Equipment and Heat Exchangers

• CoolingTower:SingleSpeed

• CoolingTower:TwoSpeed

• CoolingTower:VariableSpeed

• CoolingTowerPerformance:CoolTools

• CoolingTowerPerformance:YorkCalc

• EvaporativeFluidCooler:SingleSpeed

• EvaporativeFluidCooler:TwoSpeed

• FluidCooler:SingleSpeed

• FluidCooler:TwoSpeed

• GroundHeatExchanger:System

• GroundHeatExchanger:Slinky

• GroundHeatExchanger:Pond

• GroundHeatExchanger:Surface

• HeatExchanger:FluidToFluid

Water Heaters and Thermal Storage

• WaterHeater:Mixed

• WaterHeater:Stratified

• WaterHeater:Sizing

• WaterHeater:HeatPump:PumpedCondenser

• WaterHeater:HeatPump:WrappedCondenser

• ThermalStorage:Ice:Simple

• ThermalStorage:Ice:Detailed

• ThermalStorage:ChilledWater:Mixed

• ThermalStorage:ChilledWater:Stratified

Plant-Condenser Loops

• PlantLoop

• CondenserLoop

• Pipe:Adiabatic

• Pipe:Adiabatic:Steam

• Pipe:Indoor

• Pipe:Outdoor

• Pipe:Underground