11 Aug 2026

Why retrofit sequencing matters

A new Passivhaus Trust research paper explores how staged EnerPHit retrofit approaches can reduce energy use, bills and carbon emissions across four common UK dwelling types, with practical insights for designers and consultants.

Passivhaus retrofit upgrades (to the certified EnerPHit standard) can be undertaken step-by-step.

New UK-based modelling on the EnerPHit component method explores staged retrofit pathways for typical UK homes. The new research, commissioned by the Passivhaus Trust, shows how a phased approach can support comfortable homes, lower energy bills, and progress towards net zero.

Download here

Related topics