Navien LCB700 36kW External Oil Combi Boiler | Boilerhut

Navien LCB700 36kW External Oil Combi Boiler

Price: £3,316    each, inc. VAT | Ex. installation | Oil boiler finance available.

The Navien LCB700 36kW oil combi boiler is a suitable option for those seeking a high level of hot water and heating for their homes. These boilers are designed to be durable and come with stainless steel heat exchangers.

Additionally, they are one of the few boiler models that use Blue Flame technology. If you are considering the Navien LCB700 for your next oil combi boiler, below is a brief review and technical specification to assist you in obtaining as much information as possible.

  • Heat output: 36kW
  • Stainless Steel Heat Exchanger
  • 10 Year Warranty

(Boiler-only price: comparing five or more suppliers, including Screwfix and Plumbase. Correct February 2024).

The Navien LCB700 36kW Oil Combi Boiler is an advanced and cutting-edge condensing boiler that boasts an impressive efficiency rate of 93%. It comes equipped with a wide range of innovative features that make it stand out from other boilers in the market.

One of its most notable features is its Blue Flame technology, which enables it to operate with superior efficiency while emitting low levels of NOx – ensuring a safe and eco-friendly operation.

Navien LBC700 Stainless Steel Heat Exchanger

Navien LBC700 36kW Stainless Steel Heat Exchanger.


  • 93% / A rated efficiency
  • Stainless steel heat exchanger, making it highly efficient and durable
  • Hydrated Vegetable Oil (HVO) compatible
  • Get a premium oil combi boiler at a great price.
  • 10-year warranty
  • Modulation rage of 1:10
  • Also available in an internal version and available in 21kW and 28kW combi boiler versions

Size and Installation

  • External version of the LCB700; heavily insulated and protected
  • 36kW oil condensing combi boiler
  • Integrated expansion vessel


  • Easy to use controls
  • 3-zone ready – control up to 3-zones out-of-the-box
  • Smart thermostat compatible such as Tado and controlled via a smartphone

Environmentally Friendly

  • Blue Flame technology burns fuel at a higher temperature, resulting in fewer emissions
  • Low NOx emissions for reduced environmental impact
  • 1:10 modulation enables running at reduced power output
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