Passive House Windows

Passive House Windows

Optimal Windows can produce windows suitable for certified Passive Houses in New Zealand. U value and fRSI values for individual profiles are available on request.
Our Passive House windows are manufactured right here in New Zealand offering more flexible design and minimal lead times with excellent after sales service from the people that make the windows.
Optimal Windows almost airtight, deep timber frame and high performance insulating glass units make them the perfect choice for your Passive House project.