Passive house windows

The windows of the building are the components of the outer shell with the worst thermal qualities.

Frames for windows and curtain walls with triple glazing, optimized for passive houses and certified from Passivhaus Institut (PHI)

The main goal is to design as many windows along the south facade as possible in order to have largest solar gains, but in equilibrium with losses reported by heat transfer through the glazing. That is why special attention needs to be paid to the choice of window systems.

Certificate for passive house window frame from Passivhaus Institut, Darmstadt (PHI)

Requirements for window systems

Applying high quality triple-glazed windows;
Overall U-value for the whole window should not exceed 0.8 W/m²K;
G-value of the two-chamber (triple) glazing should preferably be about 50% or above.

Plus-energy house in Kladnica, Studio APXE