Retrofit: The 'EnerPHit' in the room

Hot off the press - read the new cross-industry retrofit guidance and discover how to level up your knowledge to address the EnerPHit in the room!

With one of the oldest housing stocks in Europe and many new homes being inadequately built, the UK is currently facing the immense challenge of retrofitting over 28 million buildings by 2050. Learn more about why we cannot rely on renewables alone and the importance of an energy-efficient-first approach to decarbonising the grid in our presentations on Passivhaus: a route to zero carbon. The urgency to upgrade existing UK homes is critical to meeting net-zero targets by 2050. The Passivhaus Trust has supported the development of the NEW cross-industry retrofit guidance, published by LETI, which shows how this is possible.


Free PDF Download	Quick start guide

The guide & quick start 2-page summary, published by LETI, guides what good retrofit looks like and suggests typical house archetype examples for four primary housing types: semi-detached, detached, mid-terrace and a flat. A summary for policy makers can be found here.

Our existing buildings are by far the biggest culprit of carbon emissions from the built environment – and therefore also pose the biggest potential for carbon savings. We must seize the opportunity to address the Climate Crisis AND radically improve the health and wellbeing of millions of households. We hope this timely guidance, along with several additional new PHT design tools, will drive urgent deep retrofit into action at scale. The Trust welcome detailed analysis that sets EnerPHit into context as the exemplar retrofit standard. LETI is a shining example of what cross-industry collaboration can achieve – we look forward to much more of this!

Sarah Lewis, Research & Policy Director, Passivhaus Trust

Passivhaus Retrofit Resources

For the latest Passivhaus retrofit resources, including the PHT retrofit position paper & periodic heating tool, please check the Passivhaus Retrofit Campaign page.

Modelling existing dwellings in PHPP Periodic Heating

The Trust launched the Passivhaus Retrofit Masterclass lecture series earlier in September, which will delve into the details for various construction methods. Level-up your retrofit knowledge in this timely series and address the EnerPHit in the room.

Bookings are now open for the full lecture series, diving into EnerPHit best-practice for various construction methods, including solid wall, 1930's cavity-wall, step-by-step construction, multi-residential and non-domestic retrofit. Spaces are limited. Early booking is advised as we anticipate large appetites for the upcoming Masterclass events commencing this Winter.