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74
questions
Tagged
unitary-system
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146
views
1
answer
1
vote
2026-01-26 11:51:02 -0600
rraustad
Supplemental Heating Coil Not Responding to Load Request
dx-coil
unitary-system
energyplus
hvac-control
hot-water-loop
118
views
no
answers
no
votes
2025-12-10 08:05:18 -0600
Hevar
EnergyPlus Load Conversion issue when switching from System:Unitary to System:UnitarySystem
hvac-template
power
unitary-system
heating-system
energyplus
585
views
1
answer
1
vote
2025-11-07 11:56:56 -0600
Abir Ahsan
Supplementary Heating in AirLoopHVAC:UnitaryHeatPump:AirToAir
unitary-system
energyplus
air-loop
heating-coil
air-source-heat-pump
347
views
2
answers
1
vote
2025-10-09 07:44:09 -0600
rraustad
Coil cooling rate results higher than autosize values
cooling-capacity
unitary-system
energyplus
design-day
autosizing
202
views
no
answers
1
vote
2025-06-26 10:50:50 -0600
Aaron Boranian
Invalid unitary system control zone: air loop unitary HP air to air
designbuilder
unitary-system
low-temperature-radiant
error
hvac
96
views
no
answers
no
votes
2025-06-26 02:28:46 -0600
Ohanbali
Invalid unitary system control zone: air loop unitary HP air to air [closed]
designbuilder
unitary-system
low-temperature-radiant
error
hvac
216
views
1
answer
no
votes
2025-03-28 11:36:14 -0600
Ski90Moo
OpenStudio "AirLoop Unitary System" object
airloop
unitary-system
openstudio
openstudio-application
outdoor-air
2k
views
no
answers
no
votes
2025-01-21 00:57:00 -0600
ms0130
Error: Did not find correct AirLoopHVAC
energyplus
airloophvac
severe-error
unitary-system
318
views
1
answer
no
votes
2024-12-03 11:13:25 -0600
Aaron Boranian
Difference between EnergyPlus Unitary Heat/Cool System and Ideal load Air System
energyplus
contam
co-simulation
unitary-system
ideal-loads-air-system
2k
views
no
answers
1
vote
2024-07-17 15:05:16 -0600
xchen
AirLoopHVAC:UnitarySystem heating PartLoadRatio calculation for cycling fan has NoHeatOutput > 0
part-load-ratio
resstock
unitary-system
energyplus
water-to-air-heat-pump
400
views
no
answers
no
votes
2024-06-24 21:04:17 -0600
DaffaKhairi
OpenStudio Input errors for AirLoopHVAC:UnitarySystem:UNITARY - Did not find Air Node
hvac-control
air-loop
openstudio-application
node-connection
unitary-system
542
views
1
answer
1
vote
2024-01-04 02:29:45 -0600
Keigo
Troubleshooting Advanced Dehumidification and Water-to-Air Heat Recovery Modeling Issue
dehumidification
unitary-system
heat-recovery
cool-reheat
energyplus
257
views
1
answer
2
votes
2023-08-21 07:52:01 -0600
rraustad
Why does the AC Sizing gets smaller when I change to VRF from Unitary?
hvac-sizing
autosizing
unitary-system
vrf
energyplus
120
views
no
answers
no
votes
2023-08-17 03:52:34 -0600
NuriaNunez
It is possible to connect two AirLoop System in series?(OpenStudio)
air-loop
unitary-system
openstudio
openstudio-application
vrf
127
views
no
answers
no
votes
2023-08-08 12:48:51 -0600
xchen
Coil:Cooling:Water has cooling rate output when chilled water flow is 0
energyplus
unitary-system
cooling-coil
chilled-water-loop
bug-report
219
views
no
answers
no
votes
2023-08-01 08:35:03 -0600
Om
OpenStudio - Unitary System: Missing required property 'air_inlet/outlet_node_name'
unitary-system
node-connection
openstudio
openstudio-application
severe-error
454
views
no
answers
no
votes
2023-06-18 16:20:36 -0600
mitrazimi
DesignBuilder Detailed HVAC Templates
designbuilder
unitary-system
chilled-water-loop
air-to-water-heat-pump
hvac-template
166
views
no
answers
2
votes
2023-03-09 09:11:05 -0600
Bárbara Torregrosa
Cooling coil of Unitary System doesn't follow setpoint
energyplus
vav-system
setpoint-manager
unitary-system
cooling-coil
340
views
1
answer
4
votes
2023-01-30 09:14:51 -0600
MJWitte
Unitary system (Water- Air) CC control issues
openstudio
energyplus
unitary-system
water-to-air-heat-pump
188
views
no
answers
no
votes
2022-11-29 15:32:26 -0600
pjansen73
OS: How to create/edit air loop unitary components?
unitary-system
air-loop
water-cooled
openstudio
openstudio-application
194
views
no
answers
2
votes
2022-10-19 08:15:00 -0600
nigusse
Is the UnitarySystemPerformance:Multispeed object supported for use with variable speed DX coils
unitary-system
variable-speed
dx-coil
performance-data
openstudio
237
views
no
answers
no
votes
2022-04-03 14:35:11 -0600
Melina
Controlling 2 zones by VAV system and EnergyPlus AirLoopHVAC:UnitarySystem: "SetPoint" [closed]
energyplus
vav
multi-zone
unitary-system
house
267
views
no
answers
2
votes
2022-03-07 19:25:18 -0600
mattkoch
making air loop constant volume fan cycle
openstudio-application
air-loop
cycling
fan
unitary-system
251
views
1
answer
1
vote
2021-07-26 14:14:53 -0600
sashadf1
Unitary System Variable for Total HVAC Power
unitary-system
air-source-heat-pump
openstudio-pat
resstock
246
views
no
answers
2
votes
2021-07-23 08:45:50 -0600
mechyai
Zone Temp/Humd EMS control of Unitary HVAC?
ems-control
ems
energyplus
python
unitary-system
2k
views
no
answers
no
votes
2020-12-02 13:05:07 -0600
Adrien
How to model PTHP with extra features - which Zone:Unitary* template?
energyplus
hvac-template
unitary-system
pthp
611
views
2
answers
1
vote
2020-11-20 04:23:34 -0600
GARIMA.RKE
Temperature dependent window control using EMS
airflow-network
unitary-system
energyplus
ems
692
views
1
answer
3
votes
2020-11-11 21:12:19 -0600
mattkoch
CoilCoolingDXMultiSpeed coil in AirLoopHVAC - unitary system wrapper
openstudio-measure
severe-error
unitary-system
multi-speed
cooling-coil
1k
views
1
answer
3
votes
2020-08-16 18:55:57 -0600
Aaron Boranian
EnergyPlus AirLoopHVAC:UnitarySystem: "SetPoint" vs "Load" control type
unitary-system
cooling-coil
setpoint-manager
hvac-control
energyplus
152
views
no
answers
2
votes
2020-05-22 11:29:42 -0600
Saif
Self-contained Unit Cooling Coil Size
unitary-system
openstudio
system-sizing
dx-coil
please-use-existing-tags
1
2
3
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