← all parity reports
HVAC & energy
Kerf vs Carrier HAP (Hourly Analysis Program)
Building energy analysis and HVAC system design — Carrier HAP vs MIT open-core.
8/8in Kerf today
6/8in Carrier HAP (Hourly Analysis Program) (included)
0behind a paid tier
2026-05-29last reviewed
| Capability | Kerf | Carrier HAP (Hourly Analysis Program) |
|---|---|---|
| Cooling / heating load calculation (ASHRAE CLTD/RTS)— |
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 ↗ |
| SMACNA duct sizing (velocity / equal-friction methods)— |
yes
packages/kerf-hvac/src/kerf_hvac/sizing.py
|
yes source ↗ |
| Part-load efficiency curves (AHRI-certified)— |
yes
packages/kerf-hvac/src/kerf_hvac/ahri_catalogue.py
|
yes source ↗ |
| Annual hourly energy simulation (8760-hour)— |
yes
packages/kerf-cad-core/src/kerf_cad_core/buildingenergy/hourly_8760.py
|
yes source ↗ |
| ASHRAE 90.1 / LEED energy compliance reporting— |
yes
packages/kerf-energy/src/kerf_energy/ashrae901_appendixg.py
|
yes source ↗ |
| IFC / BIM geometry import— |
yes
packages/kerf-bim/src/kerf_bim/import_ifc/
|
no |
| Open-source core / scripting API— |
yes
packages/kerf-hvac/src/kerf_hvac/tools.py
|
no |
- 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/carrier-hap.md and every claim in it carries a link.