Lunos e² is a decentralized ventilation system with a built-in regenerative heat recovery core.
The basic unit is a through wall fan, with a ceramic regenerative heat exchanger behind it. Operating and wired in pairs, these fans provide continuous ventilation without the need for duct-work and are installed directly in the exterior wall.
The fan's regenerative core is charged every 70 sec cycle, after which the fan reverses and the incoming air absorbs the stored heat on its way in and recovers this heat at 90.6% tested efficiency. The other fan balances this ventilation system by running in the opposing direction.