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Welcome to our new members!

Tyack Architects, Noviun Architects, Stoic Homes UK, MWP, John G, Joshua W, Petko P, Simon Carl B

Patron Member

Patron Members

Our Patron members, including companies and organisations who are leading the delivery of Passivhaus in the UK, make an essential contribution to the Trust’s work, support us in lobbying for policy changes, and inform the direction of campaigns and research at our annual Technical Panel.

Want to add your listing?

Join the Passivhaus Trust

Join a growing Passivhaus community, get discounts on training & events, and get International Passive House Association (iPHA) member benefits too.

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Login to your account to add or edit a listing, or claim an existing listing. If you need help, email

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AHR – Huddersfield

Huddersfield
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AHR – Leeds

Leeds
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AHR – London

London
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AHR – Shrewsbury

Shrewsbury
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Air tightness tester

Southery
ATTMA accredited Air tightness testing ATTMA accredited ventilation commissioning inc mvhr View listing →
Airflow

Airflow

High Wycombe
In 1955, from one man’s expertise in the fields of fan design and air flow measurement, the Airflow Developments group of companies was founded. Initially based in one factory in High Wycombe the company has since blossomed into a thriving multi-million pound international, manufacturing and research group headquartered in High View listing →
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AiroTech

Perth
AiroTech is an independent energy consultancy company offering natural blown-in insulation, thermography surveys, air tightness testing, sound insulation testing, smoke testing, drone surveys and indoor air quality assessments for domestic and commercial buildings. We are the certified installers for Gutex Thermofibre(wood fibre) covering the UK and can install blown-in cellulose insulation, on View listing →
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Airstream Ventilation Systems Ltd

Hamilton
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Akira Yamanaka Architects

London
Akira Yamanaka Architects (AYA) is a London-based chartered architectural design studio. Akira Yamanaka, the lead architect, has extensive experience, especially designing sustainable housing, schools and community/assembly buildings. He is a member of the RIBA and a Certified Passive House designer. AYA’s current projects include an energy-efficient house extension in London View listing →
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Alan Clarke

Lydney
Alan Clarke is an energy consultant and building services engineer specialising in low energy and passivhaus buildings. View listing →
5634

Alchemilla Architects Ltd

Chard
Alchemilla Architects Ltd is a RIBA Chartered Practice based in rural Somerset in the Blackdown Hills. Our work ranges from single houses and small housing estates to extensions and refurbishment projects. We see energy efficient architecture as integral to the built environment, and pride ourselves in providing a full service View listing →
14591

AlchemyGreen

London
AlchemyGreen is about collaborative transformations and integration.As well as Architecture and Project Management, we have a solid track record in Management Consultancy for professional practices in the construction industry, both architectural and engineering.We offer a range of services, either as standalone tasks, or as a combined consultancy, including architecture, project View listing →
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Alden Rose Ltd

Billericay
Freelance Certified Passive House Consultant and Design company with a passion for all things Passive. We can review initial designs and recommend solutions to obtain PH Certification on residential projects, produce PHPP models or provide a full design and consultation for all new build residential homes. Using Zoom and Teams View listing →
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Allan Corfield Architects Ltd

Dunfermline
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Allan Corfield Architects Ltd – Swindon

Swindon
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Alston + Donnelly Architecture Limited

Lancaster
3702

Altechnica

Milton Keynes
Altechnica is a Zero Carbon / Super-Passive Solar Architecture, Technology Innovation and Renewable Energy Consulting practice established by Dr Derek Taylor in 1990 to carry out commissions, research and projects.Altechnica reviewed renewable energy potential in Uttlesford, Merton BC and in Kent. They are currently the architect/renewable energy consultant for a View listing →
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Alun Watkins

Penarth
Patron
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Aluprof UK Ltd

Altrincham
Aluprof is one of the prominent European suppliers of architectural aluminium building systems for both commercial and residential building constructions. Aluprof’s product portfolio includes windows, doors, unitised systems, curtain walling, facades, rolling shutters, garage doors, framing systems and entrance doors. The vast product library of Aluprof with fire-rated and Passivhaus View listing →
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Amir Arsalan Tahouni

London
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