A system boiler is perfect for providing reliable central heating, and powerful hot water in larger homes with more than one bathroom, when used with a cylinder. Suitable for installing in a kitchen or utility room, Navien system oil boilers work alongside a cylinder to store domestic hot water. 

The new Navien LCB700 Blue Flame range of oil boilers is the first in the UK market to offer an A+ energy rating, thanks to an exceptional design and the latest smart control systems.*

Combined with easy to install features, such as a combined PRV/condensate drain and flexible pipework arrangements, the LCB700 Blue Flame is a boiler like no other.

• HVO compatible.
• Future proof Blue Flame technology delivers superior efficiency and ultra-low NOx emissions.
• Lightweight design for easy installation.
• Clean and modern design.
• Stainless steel heat exchangers for optimum durability and long term efficiencies.
• Flue venting up to 21m in horizontal and vertical arrangements.
• Flexible installation options thanks to compact design and flueing.
• Achieves highest 3-star mark in DHW performance (in accordance with EN Regulations).
• Text driven integral display for intuitive control and fuel consumption figures.
• Class leading energy efficiency for reduced running costs.

* An A+ energy rating is achieved when installed with 3 Smart Plus room thermostats.