What it looks like
Certification body, certificate number, a stroke, the model sequence, and a product suffix.
KIWA 00044/001 HP
Who issues it
Certification bodies licensed by MCS, such as Kiwa, BSI and HETAS. MCS keeps the product directory; Ofgem prints the subset the scheme accepts.
Where it appears
- UK Boiler Upgrade Scheme list, column “MCS Certification Number”
- Search: an exact code goes straight to the model's page
- API: /v1/lookup?code=