Workflow Outputs
Upon completing an OpenStudio-ERI run, a variety of summary output files and simulation files are available:
All CSV output files can be alternatively requested in JSON format; see Running Calculations.
Note
MBtu is defined as one million Btu.
Summary Outputs (CSV)
Based on which calculations were requested in the HPXML file, summary output files will be found in the results directory.
Calculation
File
Notes
ERI
CO2e_Results.csv
See CO2e_Results.csv. Only produced if 301-2019 Addendum D or newer.
ERI
ERI_Results.csv
See ERI_Results.csv.
ERI
ERI_Worksheet.csv
See ERI_Worksheet.csv.
IECC ERI Pathway
IECC_ERI_Results.csv
See ERI_Results.csv (same format).
IECC ERI Pathway
IECC_ERI_Worksheet.csv
See ERI_Worksheet.csv (same format).
ENERGY STAR
ES_Results.csv
See ES_Results.csv.
CO2e_Results.csv
A CO2e_Results.csv file will be produced when using ANSI/RESNET/ICC 301-2019 Addendum D or newer.
The file includes all of the outputs that are used in the CO2e Index calculation.
ERI_Results.csv
The ERI_Results.csv file includes the ERI result as well as the high-level components (e.g., REUL, EC_r, EC_x, IAD_Save) that comprise the ERI calculation.
The file reflects the format of the Results tab of the HERS Method Test spreadsheet.
Note that multiple comma-separated values will be reported for many of these outputs if there are multiple heating, cooling, or hot water systems.
ERI_Worksheet.csv
The ERI_Worksheet.csv file includes more detailed components that feed into the ERI_Results.csv values.
The file reflects the format of the Worksheet tab of the HERS Method Test spreadsheet.
Note that multiple comma-separated values will be reported for many of these outputs if there are multiple heating, cooling, or hot water systems.
ES_Results.csv
The ES_Results.csv file includes the following:
Output
Notes
Reference Home ERI
ERI of the ES Reference Home
SAF (Size Adjustment Factor)
Can only be less than 1 for some ES programs/versions
SAF Adjusted ERI Target
Reference Home ERI multiplied by SAF
Rated Home ERI
ERI of the Rated Home including OPP as allowed by the ES program/version
Rated Home ERI w/o OPP
ERI of the Rated Home excluding any on-site power production (OPP)
ENERGY STAR Certification
PASS or FAIL
Home Annual Outputs (CSV)
Based on which calculations were requested in the HPXML file, CSV annual output files will be found in the results directory for each simulated home.
Calculation
File
Notes
ERI
CO2eRatedHome.csv
CO2e Rated Home. Only produced if 301-2019 Addendum D or newer.
ERI
CO2eReferenceHome.csv
CO2e Reference Home. Only produced if 301-2019 Addendum D or newer.
ERI
ERIRatedHome.csv
ERI Rated Home.
ERI
ERIReferenceHome.csv
ERI Reference Home.
ERI
ERIIndexAdjustmentDesign.csv
ERI Index Adjustment Design. Only produced if 301-2014 Addendum E or newer.
ERI
ERIIndexAdjustmentReferenceHome.csv
ERI Index Adjustment Reference Home. Only produced if 301-2014 Addendum E or newer.
IECC ERI Pathway
IECC_ERIRatedHome.csv
IECC ERI Rated Home.
IECC ERI Pathway
IECC_ERIReferenceHome.csv
IECC ERI Reference Home.
IECC ERI Pathway
IECC_ERIIndexAdjustmentDesign.csv
IECC ERI Index Adjustment Design.
IECC ERI Pathway
IECC_ERIIndexAdjustmentReferenceHome.csv
IECC ERI Index Adjustment Reference Home.
ENERGY STAR
ESRated_ERIRatedHome.csv
ERI Rated Home for the ENERGY STAR rated home.
ENERGY STAR
ESRated_ERIReferenceHome.csv
ERI Reference Home for the ENERGY STAR rated home.
ENERGY STAR
ESRated_ERIIndexAdjustmentDesign.csv
ERI Index Adjustment Design for the ENERGY STAR rated home.
ENERGY STAR
ESRated_ERIIndexAdjustmentReferenceHome.csv
ERI Index Adjustment Reference Home for the ENERGY STAR rated home.
ENERGY STAR
ESReference_ERIRatedHome.csv
ERI Rated Home for the ENERGY STAR Reference Design.
ENERGY STAR
ESReference_ERIReferenceHome.csv
ERI Reference Home for the ENERGY STAR Reference Design.
ENERGY STAR
ESReference_ERIIndexAdjustmentDesign.csv
ERI Index Adjustment Design for the ENERGY STAR Reference Design.
ENERGY STAR
ESReference_ERIIndexAdjustmentReferenceHome.csv
ERI Index Adjustment Reference Home for the ENERGY STAR Reference Design.
Each CSV file includes the following sections of output.
Annual Energy
Annual energy outputs are listed below.
Type
Notes
Energy Use: Total (MBtu)
Total energy consumption
Energy Use: Net (MBtu)
Subtracts any power produced by PV or generators
Annual Energy by Fuel Type
Fuel uses are listed below.
Type
Notes
Fuel Use: Electricity: Total (MBtu)
Total electricity consumption
Fuel Use: Electricity: Net (MBtu)
Subtracts any power produced by PV or generators
Fuel Use: Natural Gas: Total (MBtu)
Fuel Use: Fuel Oil: Total (MBtu)
Fuel Use: Propane: Total (MBtu)
Fuel Use: Wood Cord: Total (MBtu)
Fuel Use: Wood Pellets: Total (MBtu)
Fuel Use: Coal: Total (MBtu)
Not used by OS-ERI
Annual Energy By End Use
End uses are listed below.
Note that all end uses are mutually exclusive – the “Electricity: Heating” end use, for example, excludes energy reported in the “Electricity: Heating Fans/Pumps” end use. So the sum of all end uses for a given fuel (e.g., sum of all “End Use: Natural Gas: *”) equal the above reported fuel use (e.g., “Fuel Use: Natural Gas: Total”).
Type
Notes
End Use: Electricity: Heating (MBtu)
Excludes heat pump backup and fans/pumps
End Use: Electricity: Heating Fans/Pumps (MBtu)
Includes supply fan (air distribution) or circulating pump (hydronic distribution or geothermal loop)
End Use: Electricity: Heating Heat Pump Backup (MBtu)
Excludes heat pump backup fans/pumps
End Use: Electricity: Heating Heat Pump Backup Fans/Pumps (MBtu)
Includes supply fan (air distribution) or circulating pump (hydronic distribution) during heat pump backup
End Use: Electricity: Cooling (MBtu)
Excludes fans/pumps
End Use: Electricity: Cooling Fans/Pumps (MBtu)
Includes supply fan (air distribution) and circulating pump (geothermal loop)
End Use: Electricity: Hot Water (MBtu)
Excludes recirc pump and solar thermal pump
End Use: Electricity: Hot Water Recirc Pump (MBtu)
End Use: Electricity: Hot Water Solar Thermal Pump (MBtu)
Non-zero only when using detailed (not simple) solar thermal inputs
End Use: Electricity: Lighting Interior (MBtu)
End Use: Electricity: Lighting Garage (MBtu)
End Use: Electricity: Lighting Exterior (MBtu)
End Use: Electricity: Mech Vent (MBtu)
Excludes preheating/precooling
End Use: Electricity: Mech Vent Preheating (MBtu)
Shared ventilation preconditioning system
End Use: Electricity: Mech Vent Precooling (MBtu)
Shared ventilation preconditioning system
End Use: Electricity: Whole House Fan (MBtu)
End Use: Electricity: Refrigerator (MBtu)
End Use: Electricity: Freezer (MBtu)
Not used by OS-ERI
End Use: Electricity: Dehumidifier (MBtu)
End Use: Electricity: Dishwasher (MBtu)
End Use: Electricity: Clothes Washer (MBtu)
End Use: Electricity: Clothes Dryer (MBtu)
End Use: Electricity: Range/Oven (MBtu)
End Use: Electricity: Ceiling Fan (MBtu)
End Use: Electricity: Television (MBtu)
End Use: Electricity: Plug Loads (MBtu)
Excludes independently reported plug loads (e.g., well pump)
End Use: Electricity: Electric Vehicle Charging (MBtu)
Not used by OS-ERI
End Use: Electricity: Well Pump (MBtu)
Not used by OS-ERI
End Use: Electricity: Pool Heater (MBtu)
Not used by OS-ERI
End Use: Electricity: Pool Pump (MBtu)
Not used by OS-ERI
End Use: Electricity: Hot Tub Heater (MBtu)
Not used by OS-ERI
End Use: Electricity: Hot Tub Pump (MBtu)
Not used by OS-ERI
End Use: Electricity: PV (MBtu)
Negative value for any power produced
End Use: Electricity: Generator (MBtu)
Negative value for any power produced
End Use: Electricity: Battery (MBtu)
Not used by OS-ERI
End Use: Natural Gas: Heating (MBtu)
Excludes heat pump backup
End Use: Natural Gas: Heating Heat Pump Backup (MBtu)
End Use: Natural Gas: Hot Water (MBtu)
End Use: Natural Gas: Clothes Dryer (MBtu)
End Use: Natural Gas: Range/Oven (MBtu)
End Use: Natural Gas: Mech Vent Preheating (MBtu)
Shared ventilation preconditioning system
End Use: Natural Gas: Pool Heater (MBtu)
Not used by OS-ERI
End Use: Natural Gas: Hot Tub Heater (MBtu)
Not used by OS-ERI
End Use: Natural Gas: Grill (MBtu)
Not used by OS-ERI
End Use: Natural Gas: Lighting (MBtu)
Not used by OS-ERI
End Use: Natural Gas: Fireplace (MBtu)
Not used by OS-ERI
End Use: Natural Gas: Generator (MBtu)
Positive value for any fuel consumed
End Use: Fuel Oil: Heating (MBtu)
Excludes heat pump backup
End Use: Fuel Oil: Heating Heat Pump Backup (MBtu)
End Use: Fuel Oil: Hot Water (MBtu)
End Use: Fuel Oil: Clothes Dryer (MBtu)
End Use: Fuel Oil: Range/Oven (MBtu)
End Use: Fuel Oil: Mech Vent Preheating (MBtu)
Shared ventilation preconditioning system
End Use: Fuel Oil: Grill (MBtu)
Not used by OS-ERI
End Use: Fuel Oil: Lighting (MBtu)
Not used by OS-ERI
End Use: Fuel Oil: Fireplace (MBtu)
Not used by OS-ERI
End Use: Fuel Oil: Generator (MBtu)
Positive value for any fuel consumed
End Use: Propane: Heating (MBtu)
Excludes heat pump backup
End Use: Propane: Heating Heat Pump Backup (MBtu)
End Use: Propane: Hot Water (MBtu)
End Use: Propane: Clothes Dryer (MBtu)
End Use: Propane: Range/Oven (MBtu)
End Use: Propane: Mech Vent Preheating (MBtu)
Shared ventilation preconditioning system
End Use: Propane: Grill (MBtu)
Not used by OS-ERI
End Use: Propane: Lighting (MBtu)
Not used by OS-ERI
End Use: Propane: Fireplace (MBtu)
Not used by OS-ERI
End Use: Propane: Generator (MBtu)
Positive value for any fuel consumed
End Use: Wood Cord: Heating (MBtu)
Excludes heat pump backup
End Use: Wood Cord: Heating Heat Pump Backup (MBtu)
End Use: Wood Cord: Hot Water (MBtu)
End Use: Wood Cord: Clothes Dryer (MBtu)
End Use: Wood Cord: Range/Oven (MBtu)
End Use: Wood Cord: Mech Vent Preheating (MBtu)
Shared ventilation preconditioning system
End Use: Wood Cord: Grill (MBtu)
Not used by OS-ERI
End Use: Wood Cord: Lighting (MBtu)
Not used by OS-ERI
End Use: Wood Cord: Fireplace (MBtu)
Not used by OS-ERI
End Use: Wood Cord: Generator (MBtu)
Positive value for any fuel consumed
End Use: Wood Pellets: Heating (MBtu)
Excludes heat pump backup
End Use: Wood Pellets: Heating Heat Pump Backup (MBtu)
End Use: Wood Pellets: Hot Water (MBtu)
End Use: Wood Pellets: Clothes Dryer (MBtu)
End Use: Wood Pellets: Range/Oven (MBtu)
End Use: Wood Pellets: Mech Vent Preheating (MBtu)
Shared ventilation preconditioning system
End Use: Wood Pellets: Grill (MBtu)
Not used by OS-ERI
End Use: Wood Pellets: Lighting (MBtu)
Not used by OS-ERI
End Use: Wood Pellets: Fireplace (MBtu)
Not used by OS-ERI
End Use: Wood Pellets: Generator (MBtu)
Positive value for any fuel consumed
End Use: Coal: Heating (MBtu)
Excludes heat pump backup
End Use: Coal: Heating Heat Pump Backup (MBtu)
End Use: Coal: Hot Water (MBtu)
Not used by OS-ERI
End Use: Coal: Clothes Dryer (MBtu)
Not used by OS-ERI
End Use: Coal: Range/Oven (MBtu)
Not used by OS-ERI
End Use: Coal: Mech Vent Preheating (MBtu)
Not used by OS-ERI
End Use: Coal: Grill (MBtu)
Not used by OS-ERI
End Use: Coal: Lighting (MBtu)
Not used by OS-ERI
End Use: Coal: Fireplace (MBtu)
Not used by OS-ERI
End Use: Coal: Generator (MBtu)
Not used by OS-ERI
Annual Energy By System Use
Results for each end use of each heating, cooling, and water heating system defined in the HPXML file are listed as shown below. Non-zero end uses from Annual Energy By End Use will be included.
Type
Notes
System Use: <HeatingSystemID>: <FuelType>: <EndUse> (MBtu)
End use energy for the heating system
System Use: <CoolingSystemID>: <FuelType>: <EndUse> (MBtu)
End use energy for the cooling system
System Use: <HeatPumpID>: <FuelType>: <EndUse> (MBtu)
End use energy for the heat pump system
System Use: <WaterHeatingSystemID>: <FuelType>: <EndUse> (MBtu)
End use energy for the water heating system
System Use: <VentilationFanID>: <FuelType>: <EndUse> (MBtu)
End use energy for the ventilation fan system (preheating/precooling only)
Annual Emissions
Annual emissions are listed below.
Emissions for each emissions type (CO2e, NOx, and SO2) are provided.
Type
Notes
Emissions: <EmissionsType>: RESNET: Total (lb)
Total emissions
Emissions: <EmissionsType>: RESNET: Net (lb)
Subtracts any power produced by PV or generators
Annual Emissions by Fuel Use
Annual emissions by fuel use are listed below.
Emissions for each emissions type (CO2e, NOx, and SO2) are provided.
Type
Notes
Emissions: <EmissionsType>: RESNET: Electricity: Total (lb)
Emissions for Electricity only
Emissions: <EmissionsType>: RESNET: Electricity: Net (lb)
Subtracts any power produced by PV or generators
Emissions: <EmissionsType>: RESNET: Natural Gas: Total (lb)
Emissions for Natural Gas only
Emissions: <EmissionsType>: RESNET: Fuel Oil: Total (lb)
Emissions for Fuel Oil only
Emissions: <EmissionsType>: RESNET: Propane: Total (lb)
Emissions for Propane only
Emissions: <EmissionsType>: RESNET: Wood Cord: Total (lb)
Emissions for Wood Cord only
Emissions: <EmissionsType>: RESNET: Wood Pellets: Total (lb)
Emissions for Wood Pellets only
Emissions: <EmissionsType>: RESNET: Coal: Total (lb)
Not used by OS-ERI
Annual Emissions by End Use
Annual emissions by end use are listed below.
Emissions for each emissions type (CO2e, NOx, and SO2) are provided. Every end use from Annual Energy By End Use will be included.
Type
Notes
Emissions: <EmissionsType>: RESNET: Electricity: <EndUse> (lb)
Emissions for this Electricity end use only (one row per end use)
Emissions: <EmissionsType>: RESNET: Natural Gas: <EndUse> (lb)
Emissions for this Natural Gas end use only (one row per end use)
Emissions: <EmissionsType>: RESNET: Fuel Oil: <EndUse> (lb)
Emissions for this Fuel Oil end use only (one row per end use)
Emissions: <EmissionsType>: RESNET: Propane: <EndUse> (lb)
Emissions for this Propane end use only (one row per end use)
Emissions: <EmissionsType>: RESNET: Wood Cord: <EndUse> (lb)
Emissions for this Wood Cord end use only (one row per end use)
Emissions: <EmissionsType>: RESNET: Wood Pellets: <EndUse> (lb)
Emissions for this Wood Pellets end use only (one row per end use)
Emissions: <EmissionsType>: RESNET: Coal: <EndUse> (lb)
Not used by OS-ERI
Annual Building Loads
Annual building loads are listed below.
Type
Notes
Load: Heating: Delivered (MBtu)
Total heating load delivered, including distribution losses.
Load: Heating: Heat Pump Backup (MBtu)
Heating load delivered by the heat pump backup only, including distribution losses.
Load: Cooling: Delivered (MBtu)
Total cooling load delivered, including distribution losses.
Load: Hot Water: Delivered (MBtu)
Total hot water load delivered, including contributions by desuperheaters or solar thermal systems.
Load: Hot Water: Tank Losses (MBtu)
Load: Hot Water: Desuperheater (MBtu)
Hot water load delivered by the desuperheater.
Load: Hot Water: Solar Thermal (MBtu)
Hot water load delivered by the solar thermal system.
Note that the “Delivered” loads represent the energy delivered by the HVAC/DHW system; if a system is significantly undersized, there will be unmet load not reflected by these values.
Annual Unmet Hours
Annual unmet hours are listed below.
Type
Notes
Unmet Hours: Heating (hr)
Number of hours where the heating setpoint is not maintained.
Unmet Hours: Cooling (hr)
Number of hours where the cooling setpoint is not maintained.
These numbers reflect the number of hours during the year when the conditioned space temperature is more than 0.2 deg-C (0.36 deg-F) from the setpoint during heating/cooling.
Peak Building Electricity
Peak building electricity outputs are listed below.
Type
Notes
Peak Electricity: Winter Total (W)
Maximum value in Dec/Jan/Feb (or Jun/Jul/Aug in the southern hemisphere)
Peak Electricity: Summer Total (W)
Maximum value in Jun/Jul/Aug (or Dec/Jan/Feb in the southern hemisphere)
Peak Electricity: Annual Total (W)
Maximum value in any month
Peak Building Loads
Peak building loads are listed below.
Type
Notes
Peak Load: Heating: Delivered (kBtu/hr)
Includes HVAC distribution losses.
Peak Load: Cooling: Delivered (kBtu/hr)
Includes HVAC distribution losses.
Note that the “Delivered” peak loads represent the energy delivered by the HVAC system; if a system is significantly undersized, there will be unmet peak load not reflected by these values.
Annual Component Building Loads
Note: This section is only available if the --add-component-loads argument is used.
The argument is not used by default for faster performance.
Component loads represent the estimated contribution of different building components to the annual heating/cooling building loads. The sum of component loads for heating (or cooling) will roughly equal the annual heating (or cooling) building load reported above.
Component loads disaggregated by Heating/Cooling are listed below.
Type
Notes
Component Load: *: Roofs (MBtu)
Heat gain/loss through HPXML
Roofelements adjacent to conditioned spaceComponent Load: *: Ceilings (MBtu)
Heat gain/loss through HPXML
Floorelements (inferred to be ceilings) adjacent to conditioned spaceComponent Load: *: Walls (MBtu)
Heat gain/loss through HPXML
Wallelements adjacent to conditioned spaceComponent Load: *: Rim Joists (MBtu)
Heat gain/loss through HPXML
RimJoistelements adjacent to conditioned spaceComponent Load: *: Foundation Walls (MBtu)
Heat gain/loss through HPXML
FoundationWallelements adjacent to conditioned spaceComponent Load: *: Doors (MBtu)
Heat gain/loss through HPXML
Doorelements adjacent to conditioned spaceComponent Load: *: Windows Conduction (MBtu)
Heat gain/loss attributed to conduction through HPXML
Windowelements adjacent to conditioned spaceComponent Load: *: Windows Solar (MBtu)
Heat gain/loss attributed to solar gains through HPXML
Windowelements adjacent to conditioned spaceComponent Load: *: Skylights Conduction (MBtu)
Heat gain/loss attributed to conduction through HPXML
Skylightelements adjacent to conditioned spaceComponent Load: *: Skylights Solar (MBtu)
Heat gain/loss attributed to solar gains through HPXML
Skylightelements adjacent to conditioned spaceComponent Load: *: Floors (MBtu)
Heat gain/loss through HPXML
Floorelements (inferred to be floors) adjacent to conditioned spaceComponent Load: *: Slabs (MBtu)
Heat gain/loss through HPXML
Slabelements adjacent to conditioned spaceComponent Load: *: Internal Mass (MBtu)
Heat gain/loss from internal mass (e.g., furniture, interior walls/floors) in conditioned space
Component Load: *: Infiltration (MBtu)
Heat gain/loss from airflow induced by stack and wind effects
Component Load: *: Natural Ventilation (MBtu)
Heat gain/loss from airflow through operable windows
Component Load: *: Mechanical Ventilation (MBtu)
Heat gain/loss from airflow/fan energy from mechanical ventilation systems
Component Load: *: Whole House Fan (MBtu)
Heat gain/loss from airflow due to a whole house fan
Component Load: *: Ducts (MBtu)
Heat gain/loss from conduction and leakage losses through supply/return ducts outside conditioned space
Component Load: *: Internal Gains (MBtu)
Heat gain/loss from appliances, plug loads, water heater tank losses, etc. in the conditioned space
Component Load: *: Lighting (MBtu)
Heat gain/loss from lighting in the conditioned space
Annual Hot Water Uses
Annual hot water uses are listed below.
Type
Notes
Hot Water: Clothes Washer (gal)
Hot Water: Dishwasher (gal)
Hot Water: Fixtures (gal)
Showers and faucets.
Hot Water: Distribution Waste (gal)
Resilience
Resilience outputs are listed below.
Type
Notes
Resilience: Battery (hr)
Not used by OS-ERI
HVAC Capacities
System outputs are listed below. Autosized HVAC systems are based on HVAC design temperatures/loads described below. Capacities for individual HVAC systems can be found in the, e.g., ERIReferenceHome.xml file.
Type
Notes
HVAC Capacity: Cooling (Btu/h)
Total HVAC cooling capacity
HVAC Capacity: Heating (Btu/h)
Total HVAC heating capacity
HVAC Capacity: Heat Pump Backup (Btu/h)
Total HVAC heat pump backup capacity
HVAC Design Temperatures
Design temperatures are used in the design load calculations for autosizing of HVAC equipment. 1%/99% design temperatures are obtained from the DESIGN CONDITIONS header section inside the EPW weather file. If they are not available in the EPW header, the design temperatures are calculated from the 8760 hourly temperatures in the EPW. Design temperatures can also be found in the, e.g., ERIReferenceHome.xml file.
Type
Notes
HVAC Design Temperature: Heating (F)
99% heating drybulb temperature
HVAC Design Temperature: Cooling (F)
1% cooling drybulb temperature
HVAC Design Loads
Design load outputs, used for autosizing of HVAC equipment, are listed below. Design loads are based on block load ACCA Manual J calculations using 1%/99% design temperatures. Design loads can also be found in the, e.g., ERIReferenceHome.xml file.
Type
Notes
HVAC Design Load: Heating: Total (Btu/h)
Total heating design load
HVAC Design Load: Heating: Ducts (Btu/h)
Heating design load for ducts
HVAC Design Load: Heating: Windows (Btu/h)
Heating design load for windows
HVAC Design Load: Heating: Skylights (Btu/h)
Heating design load for skylights
HVAC Design Load: Heating: Doors (Btu/h)
Heating design load for doors
HVAC Design Load: Heating: Walls (Btu/h)
Heating design load for walls
HVAC Design Load: Heating: Roofs (Btu/h)
Heating design load for roofs
HVAC Design Load: Heating: Floors (Btu/h)
Heating design load for floors
HVAC Design Load: Heating: Slabs (Btu/h)
Heating design load for slabs
HVAC Design Load: Heating: Ceilings (Btu/h)
Heating design load for ceilings
HVAC Design Load: Heating: Infiltration/Ventilation (Btu/h)
Heating design load for infiltration/ventilation
HVAC Design Load: Cooling Sensible: Total (Btu/h)
Total sensible cooling design load
HVAC Design Load: Cooling Sensible: Ducts (Btu/h)
Sensible cooling design load for ducts
HVAC Design Load: Cooling Sensible: Windows (Btu/h)
Sensible cooling design load for windows
HVAC Design Load: Cooling Sensible: Skylights (Btu/h)
Sensible cooling design load for skylights
HVAC Design Load: Cooling Sensible: Doors (Btu/h)
Sensible cooling design load for doors
HVAC Design Load: Cooling Sensible: Walls (Btu/h)
Sensible cooling design load for walls
HVAC Design Load: Cooling Sensible: Roofs (Btu/h)
Sensible cooling design load for roofs
HVAC Design Load: Cooling Sensible: Floors (Btu/h)
Sensible cooling design load for floors
HVAC Design Load: Cooling Sensible: Slabs (Btu/h)
Sensible cooling design load for slabs
HVAC Design Load: Cooling Sensible: Ceilings (Btu/h)
Sensible cooling design load for ceilings
HVAC Design Load: Cooling Sensible: Infiltration/Ventilation (Btu/h)
Sensible cooling design load for infiltration/ventilation
HVAC Design Load: Cooling Sensible: Internal Gains (Btu/h)
Sensible cooling design load for internal gains
HVAC Design Load: Cooling Latent: Total (Btu/h)
Total latent cooling design load
HVAC Design Load: Cooling Latent: Ducts (Btu/h)
Latent cooling design load for ducts
HVAC Design Load: Cooling Latent: Infiltration/Ventilation (Btu/h)
Latent cooling design load for infiltration/ventilation
HVAC Design Load: Cooling Latent: Internal Gains (Btu/h)
Latent cooling design load for internal gains
Home Timeseries Outputs (CSV)
See the Running Calculations section for requesting timeseries outputs.
When requested, a CSV file of timeseries outputs is written for the Reference/Rated Homes (e.g., ERIReferenceHome_Hourly.csv, ERIReferenceHome_Daily.csv, or ERIReferenceHome_Monthly.csv for the Reference home).
Depending on the outputs requested, CSV files may include:
Type
Notes
Total Consumptions
Energy use for building total.
Fuel Consumptions
Energy use for each fuel type (in kBtu for fossil fuels and kWh for electricity).
End Use Consumptions
Energy use for each end use type (in kBtu for fossil fuels and kWh for electricity).
System Use Consumptions
Energy use for each HVAC and water heating system (in kBtu).
Emissions
Emissions (CO2e, NOx, SO2).
Emission Fuels
Emissions (CO2e, NOx, SO2) disaggregated by fuel type.
Emission End Uses
Emissions (CO2e, NOx, SO2) disaggregated by end use.
Hot Water Uses
Water use for each end use type (in gallons).
Total Loads
Heating, cooling, and hot water loads (in kBtu).
Component Loads
Heating and cooling loads (in kBtu) disaggregated by component (e.g., Walls, Windows, Infiltration, Ducts, etc.).
Zone Temperatures
Zone temperatures (in deg-F) for each space (e.g., conditioned space, attic, garage, basement, crawlspace, etc.) plus heating/cooling setpoints.
Airflows
Airflow rates (in cfm) for infiltration, mechanical ventilation, natural ventilation, and whole house fans.
Weather
Weather file data including outdoor temperatures, relative humidity, wind speed, and solar.
Timeseries outputs can be one of the following frequencies: hourly, daily, or monthly.
Timestamps in the output use the start-of-period convention. Most outputs will be summed over the hour (e.g., energy) but some will be averaged over the hour (e.g., temperatures, airflows).
Home Configurations (HPXML)
Based on which calculations were requested in the HPXML file, home configuration details in HPXML format will be found in the results directory for each simulated home.
The HPXML files will have the same filename as the Home Annual Outputs (CSV) output files, but with a .xml extension instead of .csv.
The files reflect the configuration of the home after applying, e.g., the ERI 301 ruleset.
The files will also show HPXML default values that are applied as part of modeling the home. Defaults will be applied for a few different reasons:
Optional ERI inputs aren’t provided (e.g., ventilation rate for a vented attic, SHR for an air conditioner, etc.)
Modeling assumptions (e.g., 1 hour timestep, Jan 1 - Dec 31 run period, appliance schedules, etc.)
HVAC sizing calculations (e.g., autosized HVAC capacities and airflow rates, heating/cooling design temperatures and loads)
Any defaulted values will include the dataSource='software' attribute in the HPXML file.
Home EnergyPlus Files
In addition, raw EnergyPlus simulation input/output files are available for each simulation (e.g., ERIRatedHome, ERIReferenceHome, etc. directories).
Warning
It is highly discouraged for software tools to read the raw EnergyPlus output files. The EnergyPlus input/output files are made available for inspection, but the outputs for certain situations can be misleading if one does not know how the model was created. If there are additional outputs of interest that are not available in the annual/timeseries output files, please send us a request.