Pillar 5 Mechanical Heat Recovery Ventilation

Passivhaus Pillar No. 5 Mechanical Heat Recovery Ventilation (HRV) The final pillar of passivhaus is Mechanical Heat Recovery Ventilation or HRV. The reason that you need mechanical heat recovery ventilation, or HRV as we call it, in a passive house, is due to a fellow pillar of passivhaus which is air tightness. The house in…

Pillar 4 Thermal Insulation

Passivhaus Pillar No. 4 Thermal Insulation Insulation, one of the most commonly known building materials, and the most common of which is glass wool.   Glass wool insulation is a fantastic, economical way to insulate a house.   The only thing is that it has to be complemented properly for it to actually work the way…

Pillar 3 Thermal Bridge Free Construction

Passivhaus Pillar No. 3 Thermal Bridge Free Our first two articles on the pillars of passivhaus explained how air tightness and high performance glazing are fundamental to passive house.   The third pillar eliminating thermal bridges explains further how crucial construction details are to high performance homes. Thermal bridge free construction ensures a consistent high…

Pillar 1 Air Tightness

Passivhaus Pillar No. 1 Air Tightness The first pillar of a Passivhaus is air tightness, you must achieve 0.6 air changes per hour. This measure is referred to as ACH50.   It measure how many times the air changes over via leaks in the building each hour.  This is measured by pressurising the building to…

Pillar 2 High Performance Glazing

Passivhaus Pillar No. 2 High Performance Glazing Windows can severely impact on the heating and cooling loads of a building. Up to 40% of a home’s heating energy can be lost and up to 87% of its heat gained through windows. There are many type of frames and glass to choose from when building or…