NatLabRockies/OpenStudio-HPXML

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Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.

Stars: 70
Forks: 30
Open beginner issues: 0
Indexed issues: 128
Avg merge: 4d 4h
Merged PRs (30d): 5

Dominant language: Ruby
License: No license data
Last GitHub push: Sep 11, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

Open All

128 open issues indexed

Only accept matched SEER/EER pairs (SEER2 with EER2, or SEER with EER) Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

NatLabRockies/OpenStudio-HPXML#2270 · Opened Sep 16, 2026
Consistent maximum temperature for water heaters Open

bug priority low

NatLabRockies/OpenStudio-HPXML#2269 · 1 assignee · Opened Sep 9, 2026
Update soil density/specific heat for Kiva? Open

priority medium

Difficulty 5/5 Over a week Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#2258 · Opened Aug 15, 2026
Support air-to-water heat pumps serving space conditioning and DHW (multifunction / combi heat pump) Open

priority high

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#2238 · 3 comments · Opened Jul 13, 2026
Collapse like HVAC systems Open

performance

Difficulty 5/5 Over a week Newbie friendliness 45/100

NatLabRockies/OpenStudio-HPXML#2236 · Opened Jul 10, 2026
Add support for powered attic ventilation fans in HPXML/OpenStudio-HPXML Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 38/100

NatLabRockies/OpenStudio-HPXML#2230 · 1 comment · Opened Jun 25, 2026
Possible HPWH warnings Open

priority medium

NatLabRockies/OpenStudio-HPXML#2227 · 1 assignee · Opened Jun 4, 2026
Update to SEDS 2025 data Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NatLabRockies/OpenStudio-HPXML#2218 · 2 comments · Opened May 12, 2026
Unmet hours for dehumidification Open

priority medium

NatLabRockies/OpenStudio-HPXML#2203 · 1 comment · 1 assignee · Opened Apr 30, 2026
Move the DHW parasitics to an EMS program Open

priority low

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NatLabRockies/OpenStudio-HPXML#2202 · Opened Apr 28, 2026
Confusing indirect water heater outputs Open

priority medium

NatLabRockies/OpenStudio-HPXML#2187 · 2 comments · 1 assignee · Opened Apr 2, 2026
Add new `Load: Heating: Heat Pump Defrost Backup` output? Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 30/100

NatLabRockies/OpenStudio-HPXML#2179 · Opened Mar 23, 2026
Misc areas to allow more flexibility Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#2170 · Opened Mar 2, 2026
Incorporate codes/programs in BuildResidentialHPXML measure Open

priority medium

Difficulty 5/5 Over a week Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#2168 · 2 comments · Opened Feb 27, 2026
Allow specifying which loads are critical for backup power Open

enhancement priority low

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#2159 · Opened Feb 3, 2026
Improved buried duct model Open

priority medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#2142 · Opened Jan 9, 2026
Ground reflectance Open

priority medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#2134 · Opened Jan 6, 2026
Support new "not present" choices in latest HPXML version Open

priority low

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#2127 · Opened Dec 23, 2025
Further disaggregate airflow outputs in timeseries and component loads Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#2118 · 2 comments · Opened Dec 9, 2025
Parallelize unit tests Open

performance priority low

Difficulty 4/5 3-5 days Newbie friendliness 42/100

NatLabRockies/OpenStudio-HPXML#2114 · Opened Dec 5, 2025
Allow MF locations for battery location Open

priority low

NatLabRockies/OpenStudio-HPXML#2104 · 1 comment · 1 assignee · Opened Nov 26, 2025
Component loads -- internal gains vs surfaces Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#2097 · 1 comment · Opened Nov 19, 2025
Clothes dryer venting hours assumption Open

priority low

Difficulty 3/5 1-2 days Newbie friendliness 55/100

NatLabRockies/OpenStudio-HPXML#2095 · 1 comment · Opened Nov 13, 2025
Heat Pump Water Heater (HPWH) Interaction Factor Open

enhancement priority low

NatLabRockies/OpenStudio-HPXML#2090 · 1 comment · 1 assignee · Opened Oct 27, 2025
Support `Count` input for appliances Open

priority low

Difficulty 4/5 3-5 days Newbie friendliness 40/100

NatLabRockies/OpenStudio-HPXML#2071 · Opened Sep 4, 2025
BuildResidentialHPXML: Cathedral ceilings Open

priority low

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#2044 · Opened Jul 23, 2025
Replace `HPXML::has_fuels` with `FuelTypesAvailable` defaulting Open

priority low refactor

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#2027 · Opened Jun 18, 2025
Electric Panel Follow-up Issues Open

enhancement priority medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#2008 · Opened May 12, 2025
Misleading gallons of hot water output (HPWHs) Open

priority medium

NatLabRockies/OpenStudio-HPXML#1990 · 1 comment · 2 assignees · Opened Apr 23, 2025
Geothermal Heat Pump Follow-up Issues Open

bug enhancement priority medium

NatLabRockies/OpenStudio-HPXML#1978 · 2 comments · 1 assignee · Opened Apr 9, 2025
Mains water temperature too high for HI Open

priority low

Difficulty 4/5 3-5 days Newbie friendliness 30/100

NatLabRockies/OpenStudio-HPXML#1977 · 4 comments · Opened Apr 8, 2025
Update to ASHRAE 2025 design conditions Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#1970 · 1 comment · Opened Mar 27, 2025
Stochastic schedules for EV charging w/ `PlugLoad` approach Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 30/100

NatLabRockies/OpenStudio-HPXML#1962 · 1 comment · Opened Mar 20, 2025
Resample schedule files when output report resolution is lower than simulation resolution Open

priority low

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#1957 · 1 comment · Opened Mar 14, 2025
Error running OSW with schedule CSV Open

priority medium

NatLabRockies/OpenStudio-HPXML#1956 · 4 comments · 1 assignee · Opened Mar 14, 2025
Allow sub-hourly unavailable periods Open

priority low

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#1923 · Opened Feb 6, 2025
Heat pump pool heaters Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#1889 · Opened Nov 25, 2024
GHP total pump power Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#1885 · 1 comment · Opened Nov 15, 2024
Utility bill calculation enhancements for detailed rates Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 32/100

NatLabRockies/OpenStudio-HPXML#1859 · Opened Oct 16, 2024
Allow instantaneous water heaters w/ larger tank volumes Open

priority low

NatLabRockies/OpenStudio-HPXML#1858 · 2 comments · 1 assignee · Opened Oct 15, 2024
Replace default operational equations with measured data Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#1839 · Opened Sep 19, 2024
Allow multiple `CeilingFan` elements Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#1819 · 1 comment · Opened Aug 30, 2024
ERV/HRV Adjusted Sensible Recovery Efficiency Open

priority high

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NatLabRockies/OpenStudio-HPXML#1811 · Opened Aug 22, 2024
Document `ApplyASHRAE140Assumptions` flag Open

documentation priority low

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

NatLabRockies/OpenStudio-HPXML#1794 · Opened Aug 5, 2024
Catch impossibly large air infiltration values Open

priority low

NatLabRockies/OpenStudio-HPXML#1792 · 1 assignee · Opened Aug 1, 2024
Increase fixtures hot water use when no dishwasher present Open

priority medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#1787 · 1 comment · 1 reaction · Opened Jul 25, 2024
Add outputs for mixed hot water usage along with hot water usage Open

hpxml priority low

Difficulty 3/5 1-2 days Newbie friendliness 45/100

NatLabRockies/OpenStudio-HPXML#1785 · Opened Jul 24, 2024
Allow `NeighborBuilding/Azimuth` in any direction (remove restriction) Open

priority low

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NatLabRockies/OpenStudio-HPXML#1777 · Opened Jul 12, 2024
Reporting of loads w/o needing an HVAC system Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#1746 · 2 comments · Opened Jun 11, 2024
Potential for total load vs component load discrepancies Open

priority low

Difficulty 5/5 Over a week Newbie friendliness 25/100

NatLabRockies/OpenStudio-HPXML#1728 · 4 comments · Opened May 23, 2024

NatLabRockies/OpenStudio-HPXML

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