Frequently Asked Questions

Section 1 – How it works Section 2 – Cost Section 3 – Control Section 4 – Regulations Section 5 – Installations Section 6 – Terms Section 1 – How it Works What is natural ventilation? Natural ventilation is a low energy way to provide a flow of fresh air through a...

Thermal Comfort and Overheating in the UK

A Breathing Buildings guide to understanding policy for energy-efficient interiors and schools. Thermal comfort is defined by more than just a thermometer; it involves the duration and severity of heat exposure. 1. CIBSE Guide A (2006) The Chartered Institution of...

Research & Development

At Breathing Buildings we are constantly working to further reduce the energy consumption of buildings. We are continuing to refine the control algorithms of the E-stack system to push the boundaries of energy saving potential in a range of building types. This...

Comparing Energy Savings in IES

The building we modelled We are often asked what IES shows for natural ventilation and alternative ventilation strategies. The short answer is the e-stack system provides significant energy savings. But don’t take our word for it let us help you to model your...

Cold Draught Calculator

We are always talking to clients, consultants and contractors about the risk of cold draughts. Well now we have devised an excel tool to illustrate whether your system will give occupants a cold draught. The tool asks for several simple inputs: Dimensions of the room...

Indoor Air Quality in Schools

Building Bulletin 101 (BB101) and the PSBP Output Specification (2014) establish rigorous standards for ventilation, thermal comfort, and indoor air quality, helping to create healthier learning environments that support the wellbeing, comfort, and academic...

Ventilation in Schools

Teaching environments are where ideas are cultivated and young talent is nurtured, requiring excellent air quality and thermal comfort that can help with the process of learning. Within schools, colleges and universities concentration is extremely important, and with...

What is Mixing Ventilation?

Breathing Buildings pioneered the concept of mixing ventilation with the discovery and development of the proprietary e-stack ventilation system, as part of a major research programme at the University of Cambridge. So, how does mixing ventilation work? In winter,...

Natural Ventilation Explained

Ventilation in buildings is important because it provides occupants with a healthy and comfortable environment. Natural ventilation goes one step further, using the forces of wind and buoyancy to help air move naturally through a building, rather than using expensive,...

What is Hybrid Ventilation?

Hybrid ventilation is the term most commonly used to describe schemes where the ventilation is neither entirely natural, nor entirely mechanical. The designer has taken a pragmatic approach and has opted, not for the purest or simplest strategy, but for the best...