Energy Plus

Passive and Low Energy Home

The German Homes house construction embraces the passive house ideology.

Infrared heat loss detector

Infrared heat loss detector

With our service cavity wall constructions, our building method leans its way to the passive house system. We can guarantee a highly sealed house envelope because no sockets, switches or other installations are penetrating the outside wall. This results in a very air-tight house. In addition solar heat-gain is achieved through our highly efficient triple glazed windows and maintained by our high quality and temperature-retaining insulation.

Blower Door Test

Blower Door Test

The term passive house refers to a specific construction standard for residential buildings with good comfort interior climate conditions during winter and summer, without traditional heating systems and without active cooling. The house heats and cools itself , hence ”passive”. Typically this includes very good insulation levels, very good airtightness of the building, whilst a good indoor air quality is guaranteed by a mechanical ventilation system with highly efficient heat recovery.

The criteria of a passive house:

  • the total energy demand for space heating and cooling is limited to 15 kWh/m2 per year used floor area
  • the total primary energy consumption for all appliances (household electricity), hot water as well as space heating and cooling is limited to 120 kWh/m2 per year
Heat loss graphic

Heat loss graphic

A passive house has a high level of insulation with minimal thermal bridges, low infiltration and utilizes passive solar gains and heat recovery to accomplish these characteristics. Consequently renewable energy sources can be used to meet the resulting energy demand. With this criteria as a starting point, additional energy requirements may be completely covered using renewable energy sources.

For more information on passive homes – contact us or view the documents available on passive houses in our download section.

Design: Gráinne Carroll