Introduction to the project

The Retrofit Plus Research Project is a collaboration between Beattie Passive, Birmingham City University, InteSys and iZdesign under the Innovate UK initiative for ‘Scaling up retrofit of the nation’s homes. The project is retrofitting two houses to achieve EnerPHit performance. The project aims to drive innovation in energy retrofit of homes that achieve up to 100% carbon emissions reduction, drawing upon academic, technology start-up and private sector expertise.

Beattie Passive TCosy™ are using their innovative system to transform two semi-detached houses (owned by Birmingham City Council), using their highly insulated offsite system. Using Passivhaus comfort and energy efficiency principles, the TCosy™ system transforms houses and delivers dramatic cost, time saving, health and environmental benefits.

The TCosy™ delivers the following benefits for the council and their tenants:

  • 2 houses retrofitted to Passivhaus standard – TCosy™ achieves Passivhaus standards of build and incorporates Passivhaus Certified windows and doors and a Mechanical Heat Recovery and Ventilation system. This delivers a high performance, high quality home
  • Fast on-site build – the Passive Panel system will be installed onsite in a few weeks
  • Limited disturbance – residents can remain in their homes for the duration of the retrofit
  • Lift tenants out of fuel poverty – reduces heating requirements and energy bills by up to 85%
  • Creates healthier, more comfortable homes to live in
  • A new look home – we work with the council to design a completely new external façade
  • Regular engagement with your tenants to ensure they understand the process and benefits of the Retrofit
  • Increased Asset Value of you housing stock

Retrofit Plus Partners

Project websiteRetrofit Plus


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