Passive House Design

Passive House Design Principles

A passive house design includes:

Advanced window technology

Windows have exceptionally high R-values and usually combine triple-pane insulated glazing with air-seals and thermally-broken window frames.

Airtight construction

Air leakage through unsealed joints is less than 0.6 x the house volume per hour.

Lighting and electrical appliances

Low-energy lighting and high-efficiency electrical appliances minimise energy use.

Passive solar design

Buildings normally have a reduced surface area with windows facing the equator.

Space heating

Passive houses use intrinsic heat from internal sources - like waste heat from lighting, white goods and electrical devices, and people's body heat.

Super insulation

Thermal insulation materials reduce heat transfer through walls, roof and floor.


Mechanical heat recovery ventilation systems (with a heat recovery rate over 80%) and high-efficiency electronically commutated motors (ECM) maintain air quality and recover enough heat to dispense with conventional central heating.

Passive House Design in the South East

As experts in passive house design we can provide advice on constructing your home to Passive House standards.  We are happy to offer friendly advice, if you want to have a general chat about a project you are thinking about please do give us a call.

Thank you to Conker Conservation Ltd for the Passivhaus design featured on this page.

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