How energy efficient are Navien boilers?

October 10th 2022

All Navien products deliver the highest levels of energy efficiency. When used in conjunction with Navien’s Smart Plus controls, they can achieve ErP A+ (98%) efficiency ratings. The NCB700 ON gas boiler requires just one Smart Plus to achieve this, whereas NCB500 ON, NCB300, NCB-CE gas models and LCB700 Blue Flame oil boilers need to be fitted with three Smart Plus thermostats respectively.

Further details can be found in our product brochures.

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