| Subtype | Certificate Holder | Heat Pump Type | Certification Body |
|---|---|---|---|
| BLW Eco.1 4/6 | August Brötje GmbH | Outdoor Air/Water | BRE Global Limited |
| BLW Mono 6 | August Brötje GmbH | Outdoor Air/Water | Kiwa Nederland B.V. |
| BLW Mono 9 | August Brötje GmbH | Outdoor Air/Water | Kiwa Nederland B.V. |
| BLW Split 4 D | August Brötje GmbH | Outdoor Air/Water | Kiwa Nederland B.V. |
| BLW Split 6/8 D | August Brötje GmbH | Outdoor Air/Water | Kiwa Nederland B.V. |
| BLW Split-K 4 D | August Brötje GmbH | Outdoor Air/Water | Kiwa Nederland B.V. |
| BLW Split-K 6/8 D | August Brötje GmbH | Outdoor Air/Water | Kiwa Nederland B.V. |
| BLWEco.1 12/16 | August Brötje GmbH | Outdoor Air/Water | BRE Global Limited |
| BLWEco.1 8/10 | August Brötje GmbH | Outdoor Air/Water | BRE Global Limited |
| Brötje BLW Pro 20.1 | August Brötje GmbH | Outdoor Air/Water | Kiwa Nederland B.V. |
| Brötje BLW Pro 30.1 | August Brötje GmbH | Outdoor Air/Water | Kiwa Nederland B.V. |
