A six-part, expert-led online masterclass covering Passivhaus retrofit at scale, from residential component methods to complex estate-wide projects. Sessions address cost, payback and innovative funding, retrofit tools in use, and real-world insights from schools and major institutions including King’s College London, with advanced case studies across multiple building types. Introductory taster free for all.

Learn more about Weavers’ Hall in this on-demand recording of the Masterclass at the UK & Ireland Passivhaus Conference 2025. Explore how Queen’s University Belfast’s first Passivhaus-certified student living tower sets new standards for energy efficiency, comfort, and wellbeing—from early design decisions to real-world performance.

Dive into case studies of major UK projects and explore design optimisation, large-scale residential, and non-domestic EnerPHit.

• Greenhaus, Manchester

• Willowhaus, Manchester

• Dunfermline Learning Campus

• Cairn Housing

• Renfrewshire Retrofit Homes

• London School of Economics’ Firoz Lalji Global Hub

Learn key insights from the 2024 Large & Complex Passivhaus Series on air testing, MVHR systems, and more through case studies and focused sessions.

• Ventilation, Airtightness & Testing

• Heat Pumps

• Edward’s Court Care Home

• Thermal Bridging

Join our exclusive Passivhaus Masterclass on the Schwarzman Centre for the Humanities. Explore its innovative design, sustainability achievements, and construction challenges. This groundbreaking project unites faculties with a concert hall, theatres, library, café, and meeting spaces, setting a new benchmark for Passivhaus architecture in public academic spaces.

Explore the optimal timing and strategy for installing air source heat pumps (ASHPs) in retrofit projects. It examines the impact of ASHP installation during various fabric improvement stages using modeling and PHPP to estimate energy demand and running costs, aiding informed decisions for efficient retrofit planning.

The Passivhaus Retrofit series covers design and delivery, focusing on EnerPHit and its application to projects.

• Cavity Wall

• Step-by-Step Retrofit

• Multi-residential Retrofit

• Non-domestic Retrofit

The 2022 Large & Complex Masterclass explores case studies and research on large Passivhaus projects.

• Agar Grove

• St. Sidwell’s Point Leisure Centre

• RIBA Plan of Work – Passivhaus Overlay

• Steel Frame

The publication provides clear, actionable guidance for delivering high quality projects across programming, procurement, training, quality control, commissioning, and handover.

Recent summer heatwaves and a heating climate have made us more aware than ever that the risk of overheating in both new and existing buildings demands attention. The Passivhaus Trust has developed detailed guidance accompanied by a PHPP plugin to address this risk.

This document provides comprehensive guidance on the maintenance and management of individual Mechanical Ventilation with Heat Recovery (MVHR) units in multi-residential developments.

This short guidance note gives a comprehensive overview of the considerations that must be factored in when designing and specifying an air-to-water heat pump system.

This paper introduces the challenges around moisture risk to borne in mind when tackling any retrofit project, and is essential reading for designers, as well as clients who are looking to inform themselves of the key issues and factors that will influence the project.

How to Build a Passivhaus: Good Practice Guide covers the essential topics that are key to successfully delivering a Passivhaus project. It reflects the most recent evolution of best practice approaches to designing and building to the Passivhaus and EnerPHit standards.

We often take ventilation for granted; most buildings in the UK rely on draughts and leaks! Continuous fresh air & eliminating cold draughts is a key comfort factor for Passivhaus buildings. Often the steepest learning curve is reaching the airtightness target. Breathe easy with this new good practice guide.

A good practice guide to MVHR, written by Dr Mich Swainson, Sally Godber & Andrew Farr, and peer reviewed by Kym Mead, Rupert Kazlauciunas, Nick Grant, Alan Clarke, Alex Baines, Jon Bootland and Mark Siddall.

Are you getting the most out of your insulation? Passivhaus buildings are renown for eliminating the performance gap and insulation is crucial to the fabric first approach. This guide provides insight into good practice for designing, procuring, storing and installing insulation materials.

This document provides guidance for the industry on how to produce effective User Guidance aimed at non-expert occupants for Passivhaus and low energy buildings

The integration of a steel frame for Passivhaus brings unique challenges. This paper draws on knowledge gained from the first steel frame Passivhaus projects in the UK to offer applied guidance and a best practice approach to high performance and Passivhaus steel buildings.

Each of the key chapters in Passivhaus Benefits is underpinned by detailed supplementary research, to be published in three supporting papers. The first of these, Health, Wellbeing and People Performance, is available to download now.

Explore PHI Passivhaus criteria for energy-efficient, affordable, and comfortable buildings. This guidance offers practical insights into sustainable design, rigorous certification, and optimizing energy performance. Enhance living conditions and support a greener future with Passive House principles.

Discover how to minimise thermal bypass risks during design and construction in this detailed technical review.

The Passivhaus community is increasingly acknowledging and focusing on the issue of material choices and resource efficiency, demonstrated by the development of several carbon counting tools, including the embodied carbon PHribbon plug-in for PHPP.

PHT costs & benefits guidance shows that innovation costs associated with early Passivhaus projects are now reducing as the methodology has become more widely adopted. Costs are expected to fall further once the Standard is adopted at scale.

This document with ATTMA provides the technical standard to be followed for the air tightness testing of Passivhaus and other low energy buildings as required as part of a Passivhaus or low energy building design.

The Passivhaus Trust has been working with Rachel Mitchell, Bath University and WARM to analyse the performance of a number of certified Passivhaus dwellings in the UK.

The need for this Quality Assurance guide has arisen from the rapid growth of the Passivhaus Standard within the UK and the recognition that with the increased volume, scale and complexity of building projects, that it takes an increasingly well structured quality assurance system to maintain the required standards of design and construction.

To obtain a clearer picture of Passivhaus costs in the UK, AECOM, in conjunction with the Passivhaus Trust, has undertaken a research study into the capital cost of building to certified Passivhaus standards across a number of affordable housing projects in the UK, using a standardised cost tool to compare projects on a like for like basis.

A six-part, expert-led online masterclass covering Passivhaus retrofit at scale, from residential component methods to complex estate-wide projects. Sessions address cost, payback and innovative funding, retrofit tools in use, and real-world insights from schools and major institutions including King’s College London, with advanced case studies across multiple building types. Introductory taster free for all.

This paper sets out why EnerPHit must form an essential part of our national Zero Carbon ambitions and advises how to develop an appropriate retrofit plan comparing different standards and guidance.

This research report analyses real world data to provide a cost comparison between different approaches to deep retrofit, including EnerPHit.

The Passivhaus Retrofit series covers design and delivery, focusing on EnerPHit and its application to projects.

• Cavity Wall

• Step-by-Step Retrofit

• Multi-residential Retrofit

• Non-domestic Retrofit

The Managing Moisture on-demand course explores moisture-safe retrofitting for energy efficiency. Learn to prevent moisture issues in building fabric and structure while retrofitting. Gain expert insights and advanced knowledge in moisture management for safer, healthier buildings. Ideal for professionals seeking to enhance retrofit practices.

There is an urgent imperative to decarbonise home heating, but we also need better housing that is more comfortable, healthier and cheaper to run. How do we enable heat pumps and fabric to work in synergy to maximum effect? This paper aims to answer the question by modelling heat pump installation at different levels of home retrofit.

This paper introduces the challenges around moisture risk to borne in mind when tackling any retrofit project, and is essential reading for designers, as well as clients who are looking to inform themselves of the key issues and factors that will influence the project.

Discover the similarities between EnerPHit and PAS 2035/2030 and how the two standards complement one another in this new technical paper authored by PHT member QODA’s Dr Sarah Price.

The Passivhaus Trust has previously published detailed guidance on Passivhaus and zero carbon and Passivhaus and retrofit. These four-page primers will give you a quick but comprehensive overview of the issues covered.

This paper sets out why EnerPHit must form an essential part of our national Zero Carbon ambitions and advises how to develop an appropriate retrofit plan comparing different standards and guidance.

This paper provides guidance on quality assurance measures that are required to meet the Passivhaus Standard in the UK.

This paper compares the Passivhaus standard with the proposed UK Future Homes Standard (FHS) 2025, highlighting how Passivhaus, without photovoltaics (PV), offers lower running costs, better occupant comfort, and the same or lower carbon emissions.

Neglecting the Passivhaus principles of an integrated approach, modelling in PHPP and quality assurance can introduce significant risks, as shown in the case studies described in this paper.

This paper examines Zero Carbon building definitions and strategies for achieving true emissions reductions. It compares notional building regulations Zero Carbon designs with Passivhaus Classic and renewables, offering insights into meeting Zero Carbon targets for new housing effectively.

PHPP is a proven tool for assessing overheating risk. It has already been deemed to satisfy Part O of the Building Regulations (England & Wales) by several Building Control services, and should be accepted as an alternative means of compliance in place of the ‘simplified method’ and the ‘dynamic method’ for single-family dwellings and simple building forms.

Modelling undertaken by the Passivhaus Trust demonstrates that an all-electric certified Passivhaus Classic performs better than both options proposed for the Future Homes Standard (FHS) in the 2024 consultation, as well as providing many other benefits.

There is an urgent imperative to decarbonise home heating, but we also need better housing that is more comfortable, healthier and cheaper to run. How do we enable heat pumps and fabric to work in synergy to maximum effect? This paper aims to answer the question by modelling heat pump installation at different levels of home retrofit.

This position paper responds to the report ‘Ready for Zero: Evidence to inform the 2025 Future Homes Standard – Task Group Report’ by the Future Homes Hub. It addresses modelling inacurracies and puts forward four key recommendations for consideration.

Discover the similarities between EnerPHit and PAS 2035/2030 and how the two standards complement one another in this new technical paper authored by PHT member QODA’s Dr Sarah Price.

The Passivhaus community is increasingly acknowledging and focusing on the issue of material choices and resource efficiency, demonstrated by the development of several carbon counting tools, including the embodied carbon PHribbon plug-in for PHPP.

A widely adopted rule-of-thumb suggests that MVHR systems are only effective in more airtight buildings. This paper seeks to challenge this convention and suggests that MVHR systems are, in fact, desirable in nearly all domestic situations, either new-build or retrofit.