Description

Praxis has carried out Passivhaus Plus certification for this semi-detached single-family home in Bitoriano, Álava, designed by architect and Passivhaus Designer Marçal Bonadona Berdala.

The house has two floors with a treated floor area of 117 m². Built with a lightweight timber frame system, the walls have 24 cm of external insulation, 14.5 cm between the structure and 4.5cm in the service void. The roof has a total of 28.5 cm of insulation. Ecoven Plus S82 windows were used, along with argon filled low-emissivity triple glazing.

The ventilation system includes a WOLF CWL-2 325 heat recovery unit. Heating and cooling is provided by a radiant floor system with support from fan coils, powered by a Panasonic Aquarea KIT-ADC09JE5C-1 heat pump, which also produces domestic hot water.

The home achieved a blower door test result of n50 = 0.4 air changes per hour (ACH).

On the roof, 13 photovoltaic panels have been installed, generating around 6,000 kWh/year.

Links:

PEP (Plataforma Edificación Passivhaus)

iPHa (Base de datos internacional de proyectos Passivhaus)

Photos: Marçal Bonadona