Vaillant ecoFIT Sustain 618 (ErP) System Boiler Only

Vaillant ecoFit Sustain system boilers are the most compact boilers ever developed by Vaillant providing simple installation and unrivaled flexibility with top or rear flue options. With its small dimensions and one of the lowest weights in its class, the ecoFit Sustain 618 system boiler meets the growing demand from installers and end users for smaller, lightweight appliances. Compact dimensions and light weight Excellent siting versatility and easy installation High efficiency pump for reduced energy consumption