Navien LCB700 28kW Internal Oil Regular Boiler | Boilerhut

Navien LCB700 28kW Internal Oil Regular Boiler

Price: £1,897    each, inc. VAT | Ex. installation | Oil boiler finance available.

The Navien LCB700 28kW oil regular boiler harnesses the power of oil to deliver both heating and hot water efficiently to your home.

Distinguished by its robust design and stainless steel heat exchangers, a feature we highly regard, it stands out as one of the best oil boiler models.

For those contemplating the Navien LCB700 as their upcoming oil regular boiler choice, we’ve compiled a review and detailed the technical specifications to assist you in making an informed decision.

  • Heat output: 28kW
  • 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 28kW Oil Regular Boiler is a contemporary condensing boiler that boasts a remarkable efficiency rate of 93%. It comes with several advanced features that utilise innovative technology. One such feature is the Blue Flame technology which not only ensures high efficiency but also guarantees low NOx emissions.

Navien LBC700 Stainless Steel Heat Exchanger

Navien LBC700 28kW Stainless Steel Heat Exchanger.


  • 93% / A rated efficiency
  • Stainless steel heat exchanger, making it highly efficient and durable
  • Hydrated Vegetable Oil (HVO) compatible
  • Premium oil regular boiler for a great price
  • 10-year warranty
  • Modulation rage of 1:10
  • Also available in an external version and available in 21kW and 36kW regular boiler versions

Size and Installation

  • 28kW oil condensing regular boiler
  • Easy to install


  • 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 to ensure less emissions
  • Ultra low NOx emissions for reduced environmental impact
  • 1:10 modulation enables running at reduced power output

The LCB700 boiler is also available as a combi boiler and system boiler.

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