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Set up Fan:SystemModel overall system RTF output variable

NewFeatureRequestThis "issue" is a new feature request, not a defect reportThis "issue" is a new feature request, not a defect report

TriageIssue needs to be assessed and labeled, further information on reported might be neededIssue needs to be assessed and labeled, further information on reported might be needed

Status: Open.

#11577 In NatLabRockies/EnergyPlus;

· joseph-robertson opened on May 5, 2026

Update/allow latent degradation model for cycling fans

NewFeatureRequestThis "issue" is a new feature request, not a defect reportThis "issue" is a new feature request, not a defect report

TriageIssue needs to be assessed and labeled, further information on reported might be neededIssue needs to be assessed and labeled, further information on reported might be needed

Status: Open.

#11574 In NatLabRockies/EnergyPlus;

· shorowit opened on May 4, 2026

ZoneHVAC:HybridUnitaryHVAC - Check for ventilation-only setting before defaulting to standby

TriageIssue needs to be assessed and labeled, further information on reported might be neededIssue needs to be assessed and labeled, further information on reported might be needed

UnconfirmedDefectDefect has not yet confirmed to be an actual issueDefect has not yet confirmed to be an actual issue

Status: Open.

#11568 In NatLabRockies/EnergyPlus;

· kevin-moos opened on May 1, 2026

ZoneHVAC:HybridUnitaryHVAC - Add choice to optimize Supply Temperature

TriageIssue needs to be assessed and labeled, further information on reported might be neededIssue needs to be assessed and labeled, further information on reported might be needed

UnconfirmedDefectDefect has not yet confirmed to be an actual issueDefect has not yet confirmed to be an actual issue

Status: Open.

#11567 In NatLabRockies/EnergyPlus;

· kevin-moos opened on May 1, 2026

ZoneHVAC:HybridUnitaryHVAC - Return Air constraints not referenced

TriageIssue needs to be assessed and labeled, further information on reported might be neededIssue needs to be assessed and labeled, further information on reported might be needed

UnconfirmedDefectDefect has not yet confirmed to be an actual issueDefect has not yet confirmed to be an actual issue

Status: Open.

#11566 In NatLabRockies/EnergyPlus;

· kevin-moos opened on May 1, 2026

ZoneHVAC:HybridUnitaryHVAC - Min/Max OA Temp should not be constrained by default

TriageIssue needs to be assessed and labeled, further information on reported might be neededIssue needs to be assessed and labeled, further information on reported might be needed

UnconfirmedDefectDefect has not yet confirmed to be an actual issueDefect has not yet confirmed to be an actual issue

Status: Open.

#11565 In NatLabRockies/EnergyPlus;

· kevin-moos opened on May 1, 2026

Possible out-of-bounds array access in WindowGasPropertiesAtTemp() inner loop (j <= NMix should be j < NMix)

TriageIssue needs to be assessed and labeled, further information on reported might be neededIssue needs to be assessed and labeled, further information on reported might be needed

UnconfirmedDefectDefect has not yet confirmed to be an actual issueDefect has not yet confirmed to be an actual issue

Status: Open.

#11561 In NatLabRockies/EnergyPlus;

· dareumnam opened on May 1, 2026

Add an end-use subcategory field to the WaterHeater:HeatPump:PumpedCondenser & WrappedCondenser objects

IDDChangeCode changes impact the IDD file (cannot be merged after IO freeze)Code changes impact the IDD file (cannot be merged after IO freeze)

NewFeatureIncludes code to add a new feature to EnergyPlusIncludes code to add a new feature to EnergyPlus

NotIDDChangeCode does not impact IDD (can be merged after IO freeze)Code does not impact IDD (can be merged after IO freeze)

TriageIssue needs to be assessed and labeled, further information on reported might be neededIssue needs to be assessed and labeled, further information on reported might be needed

Status: Open.

Feature

#11559 In NatLabRockies/EnergyPlus;

· bonnema opened on Apr 30, 2026

Counter never incremented in an do-while loop — infinite loop risk (HVACVariableRefrigerantFlow.cc)

DefectIncludes code to repair a defect in EnergyPlusIncludes code to repair a defect in EnergyPlus

Status: Open.

#11556 In NatLabRockies/EnergyPlus;

· dareumnam opened on Apr 30, 2026

EDD output incorrectly labeled as Warmup

DefectIncludes code to repair a defect in EnergyPlusIncludes code to repair a defect in EnergyPlus

Status: Open.

#11550 In NatLabRockies/EnergyPlus;

· shorowit opened on Apr 27, 2026

EMS rated-capacity override is not fully implemented for multi-speed DX coils (Coil:Cooling:DX:MultiSpeed, Coil:Heating:DX:MultiSpeed)

TriageIssue needs to be assessed and labeled, further information on reported might be neededIssue needs to be assessed and labeled, further information on reported might be needed

UnconfirmedDefectDefect has not yet confirmed to be an actual issueDefect has not yet confirmed to be an actual issue

Status: Open.

#11534 In NatLabRockies/EnergyPlus;

· brianlball opened on Apr 17, 2026

Clean up dead branches caused by hard-coded local flags

DefectIncludes code to repair a defect in EnergyPlusIncludes code to repair a defect in EnergyPlus

UnconfirmedDefectDefect has not yet confirmed to be an actual issueDefect has not yet confirmed to be an actual issue

Status: Open.

#11533 In NatLabRockies/EnergyPlus;

· dareumnam opened on Apr 17, 2026