Heliodom

Heliodom is a residential house in Cosswiller with an unusual sundial-shaped form and large windows set in angled walls. The structure was specifically designed to capture sunlight effectively across different seasons and warm the interior naturally.

The house was developed in the early 21st century by Eric Wasser, a cabinet maker, as an experimental project for sustainable living. It emerged as a practical example of how innovative design and renewable energy could be applied to modern residential construction.

The house shows how contemporary French residential design brings environmental awareness and renewable energy into daily living. Visitors see an example of how modern building methods can merge energy efficiency with comfort.

The house uses its special angles and window positions to harness sunlight for natural heating, especially during colder months. Visitors should try to walk by at different times of day to see how light and warmth move and shift throughout the space.

The building uses thermal storage masses and passive solar heating systems to keep indoor temperatures consistent year-round. These technical solutions allow the house to remain comfortable without active heating systems or air conditioning.