Quality - a design concept applicable to any building type, size, or location.
Comfortable – warm, no draughts in winter but well ventilated for summer.
Low energy – 80% less energy used compared to a current new build.
Proven – international scientific evidence for performance during use.
See the Passivhaus trust website for more information.
Tried and tested construction delivering Passivhaus on a large or small scale.
In house specialist Passivhaus designers to help you from concept to completion.
Standard panel constructions with U-values <0.11W/m2K. Lower possible.
Thermally modelled standard details achieving zero thermal bridging.
Built in airtightness.
Quality assurance standard - the stringent Passivhaus processes ensure design aims and promises are met on the construction site.
Maintenance – Passivhaus does not rely on expensive high maintenance technologies, like wind or solar, low energy is built in.
Intuitive – there's no extra burden placed on homeowner, a well designed Passivhaus works.
Cost affective – fabric first construction builds in low energy for the life of the building.
The Code for sustainable homes (for domestic properties) and BREEAM (for commercial properties) are rating tools for attempting to measure the overall sustainability of a development. Passivhaus is a design tool and construction standard purely concerned with achieving low energy consumption and comfort, and so fits in with - and enhances - both standards.
Passivhaus achieves the thermal performance required for good ratings in Code and BREEAM. It achieves Code 4 sustainable homes with very little extra input, and also achieves the thermal performance required for Code 6. By using sensible renewable technologies a Passivhaus can be made zero carbon.
A sealed box - Passivhaus buildings can and should have opening windows!
A building without heating - a radiator, a towel rail, or a stove in key areas helps heat the whole building for those really cold damp days.
Stuffy - unlike traditional buildings a Passivhaus brings in fresh air whatever the weather outside, even with all the windows shut.
Onsite renewables – Passivhaus can have solar panels and wind turbines, but if the site is not suitable it doesn't need them to be a low energy building.