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 »
date
activity ▼
answers
votes
78
questions
Tagged
air-to-water-heat-pump
×
71
views
1
answer
2
votes
2025-06-28 13:48:14 -0500
nemo
"Bad allocation" error in EnergyPlus 25.1 with hydronic radiant floor + air-to-water heat pump
energyplus
radiant-heating
air-to-water-heat-pump
sizing-error
low-temperature-radiant
99
views
1
answer
1
vote
2025-06-05 15:12:52 -0500
Greg Estep
How to pinpoint what causes "Plant Temperature Too Hot During Warmup" Error?
ground-source-heat-pump
plant-loop
error
air-to-water-heat-pump
115
views
no
answers
1
vote
2025-03-13 06:14:37 -0500
Giovanni Miracco
DesignBuilder ASHP with radiant surface - does not maintain the indoor setpoint in winter
ashp
designbuilder
radiant-heating
air-to-water-heat-pump
unmet-hours
197
views
1
answer
3
votes
2024-12-20 13:57:59 -0500
sashadf1
the effect of timestep on peak cooling(heating) load
timestep
cooling-load
air-to-water-heat-pump
peak-demand
113
views
2
answers
no
votes
2024-12-10 02:21:55 -0500
QCeng
HeatPump:PlantLoop:EIR Outdoor Air Nodes
energyplus
air-to-water-heat-pump
plant-loop
outdoor-air
condenser
63
views
no
answers
no
votes
2024-11-17 06:20:08 -0500
seonu choi
How can I utilize waste heat from a data center using OpenStudio? (1)
air-to-water-heat-pump
openstudio-application
heat-recovery
data-center
swimming-pool
85
views
1
answer
no
votes
2024-10-20 20:37:16 -0500
Greg Estep
Modeling Air-to-Water Heat Pump Chiller in OpenStudio/EnergyPlus
air-to-water-heat-pump
air-cooled-chiller
openstudio-application
energyplus
example-file
1k
views
no
answers
1
vote
2024-07-08 10:44:05 -0500
itsJohnHanson
How to model a Water Source Heat Pump in BeOpt
air-to-water-heat-pump
water-source-heat-pump
beopt
hvac
135
views
no
answers
no
votes
2024-05-14 21:37:56 -0500
Marcos Braz
Energy Plus Two water heaters with two source sides in the same loop.
energyplus
hot-water-loop
air-to-water-heat-pump
solar-collector
plant-loop
173
views
1
answer
no
votes
2024-05-07 04:28:17 -0500
lollokai
AWHP and booster for DHW with Setpoint Control
openstudio-application
air-to-water-heat-pump
dhw
hvac-control
73
views
no
answers
1
vote
2024-04-19 14:58:32 -0500
VHellou
EnergyPlus-HP-VRF-Floor heating/cooling
energyplus
air-to-water-heat-pump
heat-exchanger
refrigerant
radiant-heating
235
views
no
answers
1
vote
2024-03-15 08:45:29 -0500
TanPham
How to add a piece of code for an object (HeatPump:PlantLoop:EIR:Heating) to my OSM file.
openstudio
air-to-water-heat-pump
openstudio-application
water-to-water-heat-pump
openstudio-measure
483
views
1
answer
2
votes
2024-02-07 13:02:07 -0500
vfournier
Air-to-Water Heat Pump PLR performance curve issue
energyplus
air-to-water-heat-pump
performance-curve
part-load-ratio
performance-data
209
views
1
answer
2
votes
2023-12-10 21:36:23 -0500
Keigo
How to model a R744 (CO2) transcritical HP for DHW in EnergyPlus?
energyplus
dhw
co2
air-to-water-heat-pump
262
views
no
answers
no
votes
2023-06-18 16:20:36 -0500
mitrazimi
DesignBuilder Detailed HVAC Templates
designbuilder
unitary-system
chilled-water-loop
air-to-water-heat-pump
hvac-template
56
views
no
answers
1
vote
2023-06-15 11:37:22 -0500
Reid
Underfloor system for heating and cooling with Heat pump in openstudio
underfloor-air-distribution
air-to-water-heat-pump
openstudio
openstudio-application
193
views
no
answers
1
vote
2023-04-10 11:34:44 -0500
GSirotti
Air-to-Water central heat pump
openstudio
air-to-water-heat-pump
openstudio-application
50
views
no
answers
no
votes
2022-11-14 02:07:21 -0500
Asfour
A model for reversible air/water heat pump in Dymola?
reversible
air-to-water-heat-pump
dymola
119
views
no
answers
no
votes
2022-10-31 04:00:43 -0500
Samir
EnergyPlus simulation
energyplus
openstudio
hvac-control
air-to-water-heat-pump
458
views
1
answer
1
vote
2022-08-15 06:23:26 -0500
qirachel
radiant surface for both floor heating and cooling
energyplus
air-to-water-heat-pump
designbuilder
radiant-cooling
radiant-heating
164
views
no
answers
1
vote
2022-08-08 12:02:11 -0500
qirachel
plant loop setpoint manager and compressor setpoint temperature
energyplus
air-to-water-heat-pump
hot-water-loop
setpoint-manager
designbuilder
106
views
no
answers
1
vote
2022-04-07 08:28:27 -0500
maraz
defrost modeling for air to water heat pumps
air-to-water-heat-pump
energyplus
defrost
621
views
1
answer
4
votes
2022-03-30 11:07:40 -0500
rraustad
Air-to-water heat pump rating conditions in EnergyPlus
energyplus
air-cooled-chiller
air-source-heat-pump
air-to-water-heat-pump
245
views
no
answers
1
vote
2022-03-23 09:14:14 -0500
Aaron Boranian
Control of Heat Pump and Boiler Using PlantEquipmentOperation:HeatingLoad and PlantEquipmentOperationSchemes.
hybrid
plant-equipment-operation
boiler
energyplus
air-to-water-heat-pump
217
views
1
answer
1
vote
2022-03-09 15:03:28 -0500
ericmartinpe
Turning on and off plant components using outdoor ambient temperature
air-to-water-heat-pump
plant-loop
energyplus
boiler
outdoor-temperature
84
views
no
answers
no
votes
2022-03-09 09:33:21 -0500
TigerMoley
Turning on and off plant components using outdoor ambient temperature [closed]
air-to-water-heat-pump
hybrid
heat
pump
boiler
232
views
no
answers
1
vote
2022-02-07 19:58:38 -0500
Tomlai15
EnergyPlus AWHP output variables
energyplus
air-to-water-heat-pump
output-variable
output-report
63
views
no
answers
2
votes
2022-01-17 04:32:35 -0500
f.passerini
Limit of Rated Condenser Inlet Water Temperature
service-hot-water
air-to-water-heat-pump
energyplus
2k
views
2
answers
3
votes
2022-01-10 12:03:35 -0500
Tomlai15
How to model an air to water heat pump?
air-source-heat-pump
air-to-water-heat-pump
energyplus
openstudio
openstudio-application
213
views
1
answer
1
vote
2021-10-15 22:32:43 -0500
mattkoch
How to add a WaterToAir Heat Pump
air-to-water-heat-pump
openstudio
openstudio-application
air-loop
1
2
3
next page »
Training Workshops
Contributors
Tags
air-to-water-heat-pump
×30
energyplus
×17
openstudio-application
×8
openstudio
×6
designbuilder
×4
plant-loop
×4
radiant-heating
×4
boiler
×3
air-cooled-chiller
×2
air-source-heat-pump
×2
dhw
×2
hot-water-loop
×2
hvac-control
×2
hybrid
×2
air-loop
×1
ashp
×1
beopt
×1
chilled-water-loop
×1
co2
×1
condenser
×1
cooling-load
×1
data-center
×1
defrost
×1
dymola
×1
error
×1
example-file
×1
ground-source-heat-pump
×1
heat
×1
heat-exchanger
×1
heat-recovery
×1
hvac
×1
hvac-template
×1
low-temperature-radiant
×1
openstudio-measure
×1
outdoor-air
×1
outdoor-temperature
×1
output-report
×1
output-variable
×1
part-load-ratio
×1
peak-demand
×1
performance-curve
×1
performance-data
×1
plant-equipment-operation
×1
pump
×1
radiant-cooling
×1
refrigerant
×1
reversible
×1
service-hot-water
×1
setpoint-manager
×1
sizing-error
×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
×
