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Breathing Buildings - Natural & Hybrid Ventilation

Natural Ventilation - Breathing Buildings -Mixing Ventilation - E-Stack - Hybrid Ventilation

Breathing Buildings is the UK’s leading low energy natural ventilation company – home of the E-Stack® and NVHR® mixing ventilation system that is changing the world of natural ventilation.

When we started the company back in 2006, there was a choice between cold draughts and wasteful pre-heating of air. Our patented E-Stack® mixing ventilation products and strategy, allied to smart controls and superb engineering, has changed that forever.

The benefits of mixing ventilation are now so clear that it is written into regulations, such as the Priority Schools Building Programme and the updated BB101 (2018), both stating that for naturally ventilated teaching spaces fresh air must be pre-mixed in winter, a testimony to the evidence we can show you.

Mixing Ventilation

The Breathing Buildings philosophy of natural ventilation stems from pioneering research at Cambridge University and the ground-breaking E-Stack® natural ventilation system.

The research at Cambridge identified a paradox with ventilation – many naturally ventilated buildings were found to use more energy than mechanically ventilated ones! This issue was solved by developing a new approach to natural ventilation which is now completely changing the industry.

Winter Mixing

This conundrum was solved by treating the heat gains in the space as a benefit rather than a problem.

A new method of naturally ventilating a building in winter was devised and patented which requires the incoming cold fresh air to be mixed with warm room air before it reaches occupants.

With this winter mixing natural ventilation strategy, the heat gains in the space are used to effectively pre-heat the air and the heating bills for naturally ventilated buildings can be reduced dramatically by 50% over the whole year.

What We Do for Our Clients

We also offer a turnkey solution for our clients, including:

  • Design support throughout the project
  • Early stage advice on window free areas & shaft sizes
  • Dynamic thermal modelling using CIBSE weather files
  • UK manufacturing site
  • In-room user interface
  • Ongoing monitoring
  • BMS integration
  • Installation









“It was a pleasure to work with Breathing Buildings. The technical support provided at the design stage was second to none. The supply, installation and commissioning of the equipment was well managed, and they reacted to the usual site challenges in a timely and professional manner.” Walsh IBS, Lancashire

We will work with you from start to finish, ensuring a successful project.

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  NVHR Weather Louvres Passive Stack Systems Fluid Dynamic Modelling Ventilation

Breathing Buildings Ltd
Unit 3A The Shade
Soham Ely

Email Breathing Buildings

Tel: 01223 450 060

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