What is Passivhaus

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 offer consultancy or certification services to help you create buildings that meet the Passivhaus standard. We share expertise and provide quality assurance for construction projects. We are Passivhaus Certifiers and assess buildings against the Passivhaus and EnerPHit building standards.
Passivhaus Certification Logo
This website is for our Passivhaus Certification services. To find out more about other Etude services see our main website.

How to get started

Find out more about the Passivhaus standard and the process for certifying a building. Employ Etude as energy consultants. Get a Passivhaus feasibility study for your scheme.

Who we work with

Building owners, architects, contractors, building professionals, estate managers and landlords. Involve us from planning through to construction to meet your energy and carbon reduction targets.

Latest Certified Passivhaus Projects

Dunstan Grove

A terrace of 8 houses in Penge for L&Q Housing.

Passmore Street

Two terrace houses on the same street renovated to EnerPHit in Mayfair. You have to look very carefully to spot the Passivhaus.

Rainham Passive Close

51 homes in Rainham, Essex. Completed in March 2015, it was the largest UK residential Passivhaus development at the time.

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.

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.

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.

Fresh air always

When the windows are shut the ventilation system continues to provide fresh, filtered air completely silently. This removes smells and moisture quickly, whilst recovering the heat from the extracted air.

Design out overheating

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

Process