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Navien Boilers

As one of the largest global manufacturers of gas boilers, thousands of homeowners trust Navien boiler products to efficiently and reliably heat their homes. We are one of the leading installers in the South West of Navien boilers.

Navien have a wide choice of high efficiency condensing gas boilers to suit all styles of homes, each of which shares the same high levels of quality, performance and durability.

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NCB700

The Powerful Combi Crossover

The game-changing NCB700 ON combi gas boiler from Navien is the first product of its type capable of delivering hot water to three bathrooms simultaneously. Shattering all preconceptions of a combi boiler’s suitability for large properties, the NCB700 ON cleverly maximises recirculation of domestic hot water (DHW) to significantly reduce water wastage and offer flow rates up to an industry-leading 22 litres per minute (at 35°C temperature rise).

  • Industry-leading turndown ratio of 15:1 for supreme efficiencies

  • Easy to use built-in digital display panel displays energy usage

  • 12-year warranty for complete peace of mind

  • ErP A+ energy efficiency rating for ultra-low running costs*

  • NaviCirc™ for simple and fast set up of hot water return system

  • Built-in DHW recirculation pump for super fast hot water delivery

  • Stainless steel heat exchangers for optimum durability and long term efficiencies

  • Hydrogen-ready (20% blend) technology for futureproofing

  • 3-zone ready with Smart Plus control pack

NCB500 ON

The Superb All-rounder

Our compact NCB500 ON gas condensing 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.

  • Easy to use built-in digital display panel displays energy usage

  • Compact dimensions for easy installation in a kitchen cupboard

  • 10-year parts and labour warranty for complete peace of mind

  • ErP A+ energy efficiency rating for ultra-low running costs*

  • State-of-the-art flow adjustment valve and auto mixing valve for superb hot water comfort

  • Smartphone compatible offering remote adjustments of heating and hot water systems

  • Smart weather forecasting and Geofencing maximise efficiencies and convenience

  • Stainless steel heat exchangers for optimum durability and long term efficiencies

  • Hydrogen-ready (20% blend) technology for futureproofing

  • 3-zone ready with Smart Plus control pack

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Naiven boiler Devon

NCB300

The Impressive Entry level

The NCB300 gas condensing combi boiler is our entry model, which offers the same hot water comfort, powerful heating and flexible installation options as larger models, but in a compact design. This combination of features makes the NCB300 gas boiler an excellent choice for smaller properties where exceptional levels of reliability and DHW performance are the priority.

  • ErP A+ energy efficiency rating for ultra-low running costs*

  • IPX5 rating provides protection from any water leaks

  • Smartphone compatible offering remote adjustments of heating and hot water systems

  • Smart weather forecasting and Geofencing maximise efficiencies and convenience

  • 5-year parts and labour warranty for complete peace of mind

  • Extended venting up to 8m

  • Stainless steel heat exchangers for optimum durability and long term efficiencies

  • Hydrogen-ready (20% blend) technology for futureproofing

Smart Plus Controller

Available for all NCB Boilers

With controls now an integral part of any modern heating system, Navien’s state-of-the-art Smart Plus wireless room thermostat offers end users a wealth of advanced features. When fitted alongside Navien’s Blue Flame oil and NCB gas boilers, the advanced control further improves energy efficiencies – increasing the overall ErP rating to ‘A+’*. In addition, Smart Plus devices are also compatible with the latest smartphone technology.

  • Easy installation

  • Control the boiler from mobile phone

  • Save boiler running costs

  • Monitor fuel consumption

  • Location function adjusts heating system based on your location

  • 3-zone ready with Smart Plus control pack

  • Smart Forecast check maintains comfort levels

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