The 3 Series ECO System is designed primarily for longevity. The system is manufactured to be very robust as it is manufactured from stainless steel throughout. This should last upwards of 20 years with only minor components possibly having to be replaced. Even when the system has come to the end of its useful life, all components can be easily recycled. This gives the 3 Series ECO a very low overall carbon footprint.
* Flow rates based on a 98% transmission