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Welcome to Bennett Freehill

Welcome to Bennett Freehill

energy in building design

Bennett Freehill is one of the UK and Ireland’s leading Building Services and Sustainability Engineering Consultancies providing sustainable, multi-disciplined design services. We are qualified Passivhaus and NZEB Designers and provide Commissioning Management and BREEAM Assessments services.

For over 20 years we have been providing innovative and practical sustainable engineering solutions of the highest quality and standard to create outstanding buildings for our clients.

We are focused on creating a fun and rewarding environment for our team, allowing us to nurture and retain the most dynamic and technically accomplished talent in the industry. This culture ensures we deliver pioneering, pragmatic MEP design excellence for our clients and colleagues.

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consultancy services

Building Services Consulting Engineers

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BREEAM &
Sustainability Consultants

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Digital
Engineering

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Passivhaus &
NZEB Designers

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Commissioning Management

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latest projects

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Queen's Purpose Built Managed Student Accommodation

First certified Passivhaus Purpose Built Student Accommodation in Belfast and the first ultra-low emission multi-occupancy building in Belfast city centre ...
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Redevelopment of CAFRE Loughry Campus

High performing Net Zero Operational Carbon education building with sustainability at the core of the design - Passivhaus Premium and BREEAM Outstanding ...
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Ulidia Integrated College

New modern three-storey school to accommodate 700 pupils and consisting of 43 classrooms ...

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Redevelopment of the CAFRE Greenmount Campus

Sustainable redevelopment of the CAFRE Greenmount Campus to provide robust, space efficient, sustainable and flexible buildings, designed to Passivhaus Premium and BREEAM Outstanding ...
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Latest News & Articles

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Paul O'Neill

MIET CEng MEng

Paul joined Bennett Freehill in late-2021 as part of the organisations drive towards technical excellence, an employee-focused culture, strategic growth and NZEB focus. 

A Chartered Engineer with 14 years’ experience in the construction and electrical industries, Paul has particular specialisms in electrical engineering, conservation, power generation and vertical transportation having worked on projects in the education, healthcare, hotels and office sectors. 

As electrical engineering design lead, Paul is responsible for technical delivery and project responsibility related to electrical engineering, and more critically, directing technical, quality and standards within the engineering teams.

Paul brings his passion for technical quality, buildability, progressivity and efficiency to the Bennett Freehill team.

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Aaron McCarthy

MCIBSE CEng BEng

Aaron is a Chartered Engineer who specialises in sustainability and low carbon design, with detailed knowledge of passive design techniques and thermal modelling procedures.

Aaron joined Bennett Freehill in mid-2021, having previously gained 10 years’ experience as an Energy and Building Services design engineer within leading multi-national building services practices. Aaron brings extensive experience in managing and delivering large scale multi-disciplinary projects and has a wealth of experience in MEP Project Management.

Aaron is responsible for client liaison, technical delivery and management of design teams to ensure we meet our clients aspirations.

Aaron brings his passion and drive for successful project delivery through collaboration with clients and design teams.

In May 2022 Aaron was appointed as Partner.

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Cormac Freehill

MCIBSE MIET CEng MSc BEng

A Chartered Building Services Engineer with over 15 years’ experience working with some of the UK’s foremost engineering companies, Cormac has been pivotal to the successful award and delivery of multi-million pound projects since being appointed to the role of Managing Director in June 2020 and rebranding the business as Bennett Freehill.

Cormac brings a new vision, new energy and fresh leadership to the team and is responsible for the strategic growth and development of the business, through supporting and undertaking marketing activities, and the training and development of our technically accomplished staff.  In the role of design team leader and client liaison Cormac ensures that the team delivers pioneering, pragmatic MEP design excellence for our clients. 

Cormac specialises in Passivhaus and Nearly Zero-Energy Building (NZEB) construction and is passionate about, and professionally skilled in, Renewable Energy Systems, Energy, Procurement, Design Management and Consulting Engineering.

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Cormac Freehill

MCIBSE MIET CEng MSc BEng

A Chartered Building Services Engineer with over 15 years’ experience working with some of the UK’s foremost engineering companies, Cormac has been pivotal to the successful award and delivery of multi-million pound projects since being appointed to the role of Managing Director in June 2020 and rebranding the business as Bennett Freehill.

Cormac brings a new vision, new energy and fresh leadership to the team and is responsible for the strategic growth and development of the business, through supporting and undertaking marketing activities, and the training and development of our technically accomplished staff.  In the role of design team leader and client liaison Cormac ensures that the team delivers pioneering, pragmatic MEP design excellence for our clients. 

Cormac specialises in Passivhaus and Nearly Zero-Energy Building (NZEB) construction and is passionate about, and professionally skilled in, Renewable Energy Systems, Energy, Procurement, Design Management and Consulting Engineering.

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