Changes To H1 AS1 Efficiency: What Does It Mean For The Renovator?
Important Vocab Introduction Recently, we have had the announcement of the new H1 efficiency standard changes. With this, we have a 12-month transition period. The changes fully take place on the 26th of November 2026. But first, what is H1 efficiency? H1 is the thermal performance standard of the building code. H1 Acceptable solution 1 (H1 […]
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