← all parity reports
HVAC & energy
Kerf vs IES VE (Virtual Environment)
Integrated building performance simulation — IES VE vs MIT open-core.
8/8in Kerf today
7/8in IES VE (Virtual Environment) (included)
0behind a paid tier
2026-05-29last reviewed
| Capability | Kerf | IES VE (Virtual Environment) |
|---|---|---|
| Dynamic thermal simulation (ASHRAE fundamentals)— |
yes
packages/kerf-hvac/src/kerf_hvac/sizing.py
|
yes source ↗ |
| AHRI-listed equipment catalogue— |
yes
packages/kerf-hvac/src/kerf_hvac/ahri_catalogue.py
|
yes source ↗ |
| Part-load efficiency curves (AHRI-certified)— |
yes
packages/kerf-hvac/src/kerf_hvac/ahri_catalogue.py
|
yes source ↗ |
| Daylighting + solar radiation simulation— | yes | yes source ↗ |
| CFD internal airflow (IESVE MicroFlo)— |
yes
packages/kerf-cfd/src/kerf_cfd/internal_airflow/room_cfd_3d.py
|
yes source ↗ |
| Full HVAC plant + air-side system modelling— |
yes
packages/kerf-hvac/src/kerf_hvac/airside.py
|
yes source ↗ |
| IFC import for geometry— |
yes
packages/kerf-bim/src/kerf_bim/import_ifc/
|
yes source ↗ |
| Open-source / scripting API— |
yes
packages/kerf-hvac/src/kerf_hvac/tools.py
|
partial |
- yes shipped
- partial works with limits
- paid tier present, but behind an add-on or meter
- no not available
Corrections welcome. These rows are read off published documentation on the date shown and go stale as products ship. If a row is wrong, open an issue — the source file is public/compare/ies-ve.md and every claim in it carries a link.