First time here? Check out the
Help
page!
Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Hi there! Please sign in
help
tags
users
badges
ALL
UNANSWERED
Ask Your Question
RSS
Sort by »
relevance
date
activity ▼
answers
votes
703
questions
Tagged
1k
views
2
answers
5
votes
2026-05-11 09:00:39 -0500
qirachel
Horizontal ground heat exchanger
openstudio
ground-source-heat-pump
ground-temperature
openstudio-application
180
views
1
answer
no
votes
2026-03-14 04:57:06 -0500
zgagdfd
Error of Chiller:Electric:EIR
openstudio-application
energyplus
severe-error
water-cooled-chiller
197
views
1
answer
1
vote
2026-02-09 14:32:05 -0500
Denis Bourgeois
I cant see ideal air load in output variables or BCL
ideal-loads-air-system
output-variable
openstudio-application
heating-load
121
views
no
answers
1
vote
2026-02-03 08:53:56 -0500
BShah
eQUEST hourly AMY 2024-2025 Toronto weather files
equest
amy
weather
weather-file
345
views
1
answer
1
vote
2025-12-01 11:11:57 -0500
shorowit
EMS does not turn off ideal load
energyplus
ems
ideal-loads-air-system
ems-control
natural-ventilation
362
views
1
answer
1
vote
2025-12-01 04:55:16 -0500
Denis Bourgeois
Difference Turn on ideal air loads and ZoneHVAC:IdealLoadsAirSystem
openstudio
ideal-loads-air-system
district-heating
openstudio-application
heating-load
298
views
1
answer
1
vote
2025-11-25 19:54:22 -0500
antonszilasi
How can I model an ‘IdealLoadsAirSystem’
energyplus
openstudio-application
cooling-load
heating-load
ideal-loads-air-system
597
views
1
answer
no
votes
2025-11-22 10:22:42 -0500
obuchely
Problem with Ideal Loads
ideal-loads-air-system
openstudio
cooling-load
district-heating
energyplus
101
views
no
answers
no
votes
2025-11-20 14:54:06 -0500
glbrown
Using OpenStudio ver. 1.3.1 with Sketchup Plugin ver. 1.7.0 and my model has equipment and several other items which were are not active in "My Model"
openstudio
sketchup2021
openstudio-application
equipment
317
views
2
answers
1
vote
2025-11-07 07:41:50 -0500
Angothoron
Direct ON-OFF Access to Heating/Cooling System via Python API
energyplus-api
python
energyplus
ems-control
hvac-control
325
views
1
answer
1
vote
2025-11-03 08:50:14 -0500
RobinCris
Output:Variable customization
output-variable
ceiling-fan
output-meter
energyplus
343
views
1
answer
1
vote
2025-10-15 08:25:38 -0500
Greg Estep
Negative Interzone Floor Zone Component Load Summary Results
energyplus
zone-component-load-summary
summary-report
heat-transfer
185
views
no
answers
no
votes
2025-10-06 15:54:52 -0500
Twose10
Different Zone Sizing Results with Different ZoneHVAC Equipment
energyplus
autosizing
sizing
zone-sizing
105
views
no
answers
no
votes
2025-10-06 15:53:21 -0500
Twose10
Diferent ZoneHVAC -> Different Zone Sensible Heating [closed]
energyplus
autosizing
sizing
zone-sizing
348
views
1
answer
2
votes
2025-07-31 14:47:28 -0500
Yapan
ResStock Multifamily Building Simulation Details
resstock
openstudio-hpxml
multifamily
877
views
2
answers
no
votes
2025-07-20 11:55:53 -0500
Rafael
How set infiltration rate (ACH) in AFN model?
energyplus
airflow-network
infiltration
536
views
2
answers
no
votes
2025-07-16 22:37:46 -0500
yiyuan-jia
Method of introducing outside air using "ideal load system"
ideal-loads-air-system
outdoor-air
mechanical-ventilation
energyplus
174
views
no
answers
no
votes
2025-07-02 00:25:53 -0500
Pranav Deshmukh
True Peak Load Occurs on Unexpected Day — How to Identify Peak Date from Solar Gains and Geometry? [closed]
energyplus
geometry
solar-gain
peak-load
design-day
1k
views
5
answers
no
votes
2025-06-19 11:58:21 -0500
ashopinion
designbuilder v7 simple hvac seasonal cop has no effect
designbuilder
hvac
cop
summary-report
817
views
4
answers
1
vote
2025-06-02 22:54:05 -0500
yiyuan-jia
any alternative for create DOE prototype measure ?
openstudio-application
residential-modeling
thermal-analysis
apply-measure
535
views
1
answer
no
votes
2025-06-02 10:19:54 -0500
Denis Bourgeois
Output cannot be found in CSV
energyplus
output-variable
601
views
1
answer
1
vote
2025-05-27 07:12:27 -0500
Denis Bourgeois
How do I model Different window materials in Openstudio?
openstudio
window
material
construction-set
193
views
no
answers
no
votes
2025-05-18 10:06:19 -0500
ssjjjyyy
Cooling Energy Increase after Reducing Nominal Lighting Power
energyplus
internal-load
lighting
cooling-load
openstudio
527
views
1
answer
2
votes
2025-05-16 02:36:33 -0500
Ski90Moo
OpenStudio Convergence Error
openstudio
convergence
severe-error
energyplus
warmup
945
views
1
answer
5
votes
2025-05-13 15:17:22 -0500
Denis Bourgeois
… 90.1 2022 requirements for linear thermal bridges
thermal-bridge
tbd
ashrae-90.1
ecb
heat-transfer
665
views
1
answer
no
votes
2025-05-05 07:51:58 -0500
Fred
how can I apply airflow network with ideal air loads?
airflow-network
ideal-loads-air-system
energyplus
natural-ventilation
213
views
no
answers
1
vote
2025-04-06 08:20:36 -0500
Nico001
How to link HX with supply side of condenser loop in DesignBuilder
designbuilder
ground-source-heat-pump
condenser-loop
heat-exchanger
hvac-diagram
212
views
1
answer
no
votes
2025-03-19 20:19:22 -0500
shorowit
Energy use drops but energy bill same
energyplus
electricity
368
views
no
answers
no
votes
2025-03-11 10:22:45 -0500
yavi828
The Cooling Rate Is Too Little [closed]
openstudio
cooling-rate
ideal-loads-air-system
openstudio-application
341
views
1
answer
no
votes
2025-03-08 00:34:14 -0500
A.Pressler
Simple constant mech ventilation
energyplus
mechanical-ventilation
hvac-control
1
2
3
4
5
...
24
next page »
Contributors
Tags
energyplus
×18
ideal-loads-air-system
×8
openstudio
×8
openstudio-application
×8
cooling-load
×3
heating-load
×3
output-variable
×3
airflow-network
×2
autosizing
×2
designbuilder
×2
district-heating
×2
ems-control
×2
ground-source-heat-pump
×2
heat-transfer
×2
hvac-control
×2
mechanical-ventilation
×2
natural-ventilation
×2
severe-error
×2
sizing
×2
summary-report
×2
zone-sizing
×2
amy
×1
apply-measure
×1
ashrae-90.1
×1
ceiling-fan
×1
condenser-loop
×1
construction-set
×1
convergence
×1
cooling-rate
×1
cop
×1
design-day
×1
ecb
×1
electricity
×1
ems
×1
energyplus-api
×1
equest
×1
equipment
×1
geometry
×1
ground-temperature
×1
heat-exchanger
×1
hvac
×1
hvac-diagram
×1
infiltration
×1
internal-load
×1
lighting
×1
material
×1
multifamily
×1
openstudio-hpxml
×1
outdoor-air
×1
output-meter
×1
Site design and logo: Copyright © 2015 Big Ladder Software LLC. All rights reserved.
The
Unmet Hours
and
Big Ladder
names and logos are trademarks of Big Ladder Software LLC.
User contributions licensed under the
Creative Commons Attribution Share Alike 3.0 License
.
Powered by
Please note: Unmet Hours requires javascript to work properly, please enable javascript in your browser,
here is how
dummy
×