Passivhaus is the World’s leading comfort and energy standard for buildings. It sets a target for the amount of heat and electrical energy that a building can use and provides a process to ensure that target is achieved. Certify your building to Passivhaus.

What we do

Etude help you create buildings that have the best internal comfort, minimal impact on the environment and the lowest operating cost. The Passivhaus standard is a process to help achieve these outcomes. We provide building physics design consultancy, energy calculations, and quality assurance for new and existing buildings.

Etude are Passivhaus Certifiers and assess buildings against the Passivhaus and EnerPHit building standards.

Certified Passivhaus Designer icon
Passivhaus Certifier icon

How to get started

To achieve the Passivhaus standard you need a Passivhaus Designer and a separate Passivhaus Certifier. Etude can provide either service for your project, but not both.

See how Passivhaus design fits with our broad range of building design consultancy services.

Find out more about the Passivhaus standard and request a quote for Passivhaus certification.

Better buildings

Passivhaus is a process to help deliver better buildings. Certified buildings are:

  • Ready for a Net Zero carbon future with the lowest energy consumption possible.
  • Quality assured, achieving the performance claimed in the design.
  • Built robustly to work for the entire design life.

Passivhaus has been delivering buildings achieving these outcomes since 1997, and in the UK since 2009. Here is a List of the first Passivhaus buildings in the UK.

What is Passivhaus?

Energy efficiency

The leading comfort and energy efficiency standard for buildings. It ensures comfort and low fuel bills.

Quality assurance

Passivhaus Certification provides independent quality and technical checks throughout design and construction.

Better buildings

Contributing to better buildings, proven to work through feedback and monitoring.

Simple to use

You can use a Passive building just like any other building. Throw open the windows when it is hot or when you want a breeze, stoke up your woodburner in the winter. The only difference is that when you shut the windows to stay warm, it stays warm.

Holistic building design

Building performance based on evaluation of the whole building using proven PHPP software. Considers how fabric and systems interact and enables design using a predicted building performance.

Improved comfort and health

Fresh filtered air to every room removes internal pollutants, dust, and cuts out pollen and pollution from outside. Consistent warm rooms in winter with minimum heating. No cold drafts when you don’t want them, and no cold windows running with condensation. Warm in winter, cool in summer.

Reduce fuel poverty

Minimise the amount of energy needed to run a building to reduce fuel poverty in a meaningful, robust way. Heating bills less than £100 a year with no loss of comfort leaves cash for living.

Fresh air always

When the windows are shut the ventilation system continues to provide fresh, filtered air completely silently. This removes smells and moisture, but avoids wasting energy by recovering heat from the extract air.

Design out overheating

Minimising overheating risk is carefully managed in the design process. There is a stringent target for certified buildings to meet, heat gains from the sun and equipment in the building are accounted for.

Criteria for Passivhaus and EnerPhit building standards

You can find the latest Passivhaus criteria on the PHI website. The criteria version should match the version of PHPP you are using, so projects using PHPP10 need to use version 10 of the criteria.

Firsts of Passivhaus

Passivhaus is becoming increasingly popular thanks to the expanding evidence demonstrating high levels of comfort and energy savings achieved. To honour UK pioneers and to settle any pub arguments, here is our less than definitive list of the first Passivhaus certified buildings in the UK.