PH15 is an optimized construction solution, designed to simplify all the technical aspects of building up to the Passivhaus energy efficiency standard. PH15 is a complete Passivhaus construction solution (weather tight shell based on a pre-cut timber frame + triple-glazed windows/doors + heat recovery ventilation system). PH15 ensures good quality of specificationearly cost certainty and de-risks achieving excellent air tightness results

By optimising the building fabric, you achieve reliable and lasting energy performance, as well as high internal thermal comfort levels. With PH15 you further benefit from the use of natural construction materials along with an efficient whole house ventilation system. These ensure excellent indoor air quality and the associated health improvements from conditions such as asthma and allergies like hay fever.

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Passivhaus Trust Awards 2013

Passivhaus Trust Award 2013

Passivhaus Homes Ltd Winners of the Residential Category UK Passivhaus Trust Award 2013

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What is a Passivhaus?

Designed for ultra-low energy consumption combined with consistently good air quality. . . .

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About Us

Passivhaus Homes is based near Totnes in South Hams, Devon and in North London

In the UK we continue to construct our new houses with minimum insulation, lots of thermal bridges and air leakiness. The result is houses that continue to be expensive to heat, suffer from condensation and have poor internal air quality. The PH15 System is an alternative construction method that addresses these problems. We hope it will contribute to a change for the better in UK building practice. Timber frame solutions similar to this are common in Nordic countries and in Canada/US, where the self build market contributes over 50% of new houses built. We would like to see this change in the UK, away from the big volume developers. The UK urgently needs more social housing and self/custom build, and much better quality housing. PH15 delivers low bills, a  very comfortable internal environment and healthy indoor air quality – and most importantly PH15 can be accurately costed at an early stage while de-risking achieving the very demanding air-tightness target of maximum 0.6 ach@50Pa. 

NOTE: By adopting PH15 as your preferred construction method does not require you to certify to the Passivhaus standard. We have certified most of our early projects to demonstrate that PH15 is fully compliant to Passivhaus performance levels. 

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Passivhaus Trust Member
15 40 architecture collective
certified passivhaus consultant