What it looks like
A date in the list's “Certified Until” column.
26 Oct 2026 Vaillant aroTHERM Plus 10kW VWL 105/6 A S2, as printed on 12 Oct 2026.
Who issues it
Set by the certification body when it issues or renews the certificate.
Glossary / UK
The end date of a product's MCS certification period, printed on the BUS list. Renewals usually appear on the list before the date passes; when they do not, an application for that model after the date fails.
A date in the list's “Certified Until” column.
Set by the certification body when it issues or renews the certificate.