NAVIEN NCB-40LDWE ERP 40KW...
Wall Mounted Condensing Gas Boiler with Double Stainless Exchanger for Maximum Durability and Efficiency, Instant Hot Water Production, User Friendly, Ease of Installation, GAR Certified together with NAVIEN Wired Thermostat, which ensures even greater savings in gas consumption and gives the ability for the consumer to influence the basic functions of the boiler and receive updates on any errors.