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 4.8 stars

1,566 reviews

 4.8 stars

1,566 reviews

Navien LCB700 21kW Internal System Oil Boiler

Navien LCB700 21kW Internal System Oil Boiler Boiler
Typical Price (inc VAT)
Typical installation Cost (inc VAT)*
£1000 - £1500
Sundries (Filter, Flue, etc)

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Make Navien
Model LCB700 21kW Internal System Oil Boiler
Is Condensing Condensing
Efficiency Rating 93%
Band Rating A Rating
LPG Compatible No
Standard Warranty 10 Years
Central Heating Max. Output 21kW
Mounting Floor Standing
Flow Rate N/A
Typical Price (inc VAT) £N/A
Typical installation Cost (inc VAT)* £1000 - £1500
ERP Rating A Heat

* This is a guide price for a straightforward, like-for-like boiler replacement. Installation costs will vary dependent on work required.

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Product Description

The LCB700 is a highly reliable condensing floor-standing internal system boiler that runs on oil that has been designed and manufactured by Navien.

How efficient is the LCB700 System?

A seasonal efficiency rating of 93% and ErP A-rating make this a highly efficient unit that will help to keep your energy bills down to a minimum.

Will this size boiler suit my home?

A 21 kW output rating makes this model of the LCB700 ideal for smaller homes with only one bathroom and not such a high demand for heating and hot water.

What options does this boiler come with?

There’s no shortage of choice in the Navien LCB700 range of boilers, as you can take your pick of an internal or external installation as well as a regular model rather than the system. A range of output ratings makes it easier to find a suitable unit for your home too with 21 kW and 36 kW models also available.

Where can this boiler be placed?

Navien have designed this LCB700 model for internal installation in a kitchen or utility room. Compact dimensions mean that it’s able to fit underneath a standard worktop so it won’t take up too much space.

Will this boiler save me money?

As well as saving you money on the installation, the high efficiency rating of the LCB700 means that the unit will be saving you money on your energy bills throughout its lifetime. To put the 93% efficiency into context, for every £1 you spend on heating your home, only 7p is wasted, which is a considerable saving when compared to older boilers with efficiencies of 60-70%.

Is a system boiler suitable for my home?

As a system boiler, the LCB700 sends hot water to the radiators and a sealed hot water storage cylinder. They’re ideal for meeting the heating and hot water demands of medium-sized properties and also need additional space for the cylinder.

What are the key features of the LCB700?

Navien LCB700 boilers offer revolutionary power of blue flame technology as well as a simple casing, smart controls for improved comfort, 2 channel system with separate options for heating and water temperatures, zone control which allows you to control 3 areas of the home individually.

There’s also a stainless steel heat exchanger that resistant to corrosion for longer boiler life, a combined pipe for PRV and condensate drain to reduce the number of pipes without compromising performance, a fuss-free flue, the lowest NOX emissions on a boiler (57mg/kWH), geofencing capability as well as a smart forecast check so that the boiler can heat your home, according to the forecast and weather outside.

Does this boiler come with a warranty?

Available with a standard 10 year warranty, the LCB700 is well covered in the unlikely event that something goes wrong.

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Excellent 4.8 out of 5

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