Navien 36kW Oil System Boiler External LCB 700 LSX PLCB0036SH002

The Navien LCB700 Blue Flame 36kW Oil System Boiler (External LSX variant) delivers high efficiency and low emissions in a compact, installer-friendly package. With stainless steel heat exchangers for durability, A+ ErP efficiency when paired with the Smart Plus control and a class-leading ErP A rating of 93% (98% with Smart Plus x3), this boiler cuts running costs while meeting ultra-low NOx standards. The lightweight, clean design supports flexible flueing up to 21 m and multiple installation orientations. Built for reliability, the LCB700 offers a 10-year parts and labour warranty, integrated display with fuel consumption readout, combined PRV/condensate drain and 3-zone Smart Plus readiness, making it suitable for residential and small commercial heating systems requiring efficient, future-proof oil-fired central heating.