Plain-English guides to the German energy performance certificate (Energieausweis): who needs one, what it costs, how the classes work and how to order online.
4 articles
Not the year of construction decides whether a heat pump suits an older house, but the flow temperature — and the energy certificate shows where you stand.
The iSFP is not an energy certificate but a subsidised plan. What it costs, what the state pays and why the bonus works differently since July 2026.
Forced renovation from 2030, oil boilers out, class F means duty: six common claims about mandatory renovation — set against the verified legal position.
Renovation duties, BEG funding rates since 21 July 2026, the iSFP bonus and the effect on the energy certificate — sourced and in line with the GModG.
