Current approved version iSBEM_v6.1.e to carry out calculations for the purposes of Building Regulations Part L compliance and EPC assessments in England. This version implements England's 2021 NCM in support of the 2021 Edition of the Approved Document L, Volume 2, in England, effective 15th June 2022.
Please read the installation instructions before downloading the iSBEM software. For further help, please see the FAQ page.
Downloads
| iSBEM_v6.1.e software | click here to download |
| Patch01 to iSBEM_v6.1.e | click here to download |
| Patch02 to iSBEM_v6.1.e | click here to download |
| Patch03 to iSBEM_v6.1.e | click here to download |
| iSBEM User Guide | click here to download |
| England NCM Modelling Guide 2021 edition (Sep 2022) | click here to download |
Optional Downloads
| NCM Databases | click here to download | |
| SBEM Technical Manual | click here to download | |
| iSBEM_v6.1.e_x86 software for 32-bit Windows only | click here to download | |
| Patch01 to iSBEM_v6.1.e_x86 for 32-bit Windows only | click here to download | |
| Patch02 to iSBEM_v6.1.e_x86 for 32-bit Windows only | click here to download | |
| Patch03 to iSBEM_v6.1.e_x86 for 32-bit Windows only | click here to download |
Seasonal boiler efficiencies
Seasonal efficiencies for boilers used in non-domestic buildings (based on 2021 ADL2 equation 6.1) can be accessed from the NCM Products Characteristics Database (PCDB) here.
NB: The maximum appliance rating for boilers from the PCDB is 70 kW.
SBEM code
This text manual (in PDF format) includes c++ code for all the objects in the program SBEM_v4.1.a (Simplified Building Energy Model). The code is organised by commands that are listed alphabetically. Keywords associated with commands are also listed, grouped according to function. Description of commands and keywords support the understanding of the c++ code for those not familiar with the intrinsic structure of the SBEM code.
