The Navien NCB500 ON 41kW gas combi boiler offers superb hot water comfort, powerful heating and flexible installation options – making it the ultimate all-rounder for modern family homes. Every model features high quality components to provide exceptional levels of reliability and performance.

Thanks to Navien ON technology, the ground-breaking Combi Crossover boilers have the power and performance of a system boiler and the advantages of a Combi boiler without the cylinder, eliminating slow heat-up times and low flow rates.

By putting hot water first, Navien’s innovative ON technology removes the fluctuation between hot and cold by providing quality, consistent and efficient hot water. With Navien ON, the possibilities are endless.

Key Features

• Easy to use built-in digital display panel displays energy usage.
• Hydrogen-ready (20% blend) technology for futureproofing.
• Smartphone compatible offering remote adjustments of heating and hot water systems, via app.
• Smart weather forecasting and Geofencing maximise efficiencies and convenience.
• State-of-the-art flow adjustment valve and auto mixing valve for superb hot water comfort.
• Compact dimensions for easy installation in a kitchen cupboard.
• Stainless steel heat exchangers for optimum durability and long term efficiencies.
• IPX4 rating provides protection from any water leaks.
• Shower rating – 2 showers and 1 tap