How it works

The ELIXAIRⓇ climatic well is a network of buried pipes that significantly reduces a building's heating and cooling requirements.

The climatic well, also known as a Provençal well or Canadian well, is a smart system that uses geothermal energy to reduce the need for heating and cooling in a building. It relies on an unlimited, free, and renewable energy source, allowing for air cooling in summer and preheating in winter. The ELIXAIR system leverages this technology to provide optimal thermal comfort while reducing energy consumption.
💡 Did you know?
- The Provençal well refers to air cooling during summer.
- The Canadian well refers more to air preheating in winter.
- The term climatic well encompasses both functions to provide year-round comfort.
It also offers a strategic advantage in preparing for climate change.
Adopting local passive systems will ensure our comfort and resilience in the face of future crises.
Michel Le Sommer, President of the consulting firm Le Sommer Environnement

The climatic well, also known as a Provençal well or Canadian well, is a smart system that uses geothermal energy to reduce the need for heating and cooling in a building. It relies on an unlimited, free, and renewable energy source, allowing for air cooling in summer and preheating in winter. The ELIXAIR system leverages this technology to provide optimal thermal comfort while reducing energy consumption.
💡 Did you know?
- The Provençal well refers to air cooling during summer.
- The Canadian well refers more to air preheating in winter.
- The term climatic well encompasses both functions to provide year-round comfort.
It also offers a strategic advantage in preparing for climate change.
Adopting local passive systems will ensure our comfort and resilience in the face of future crises.
Michel Le Sommer, President of the consulting firm Le Sommer Environnement
A climatic well will be efficient if it is combined with a ventilation system that allows air to be distributed inside the building.
Since 2012 and the implementation of the French RT 2012 thermal regulation, ventilation has not only been mandatory but must also meet clear objectives in terms of energy performance.