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Navien Boiler Prices, Reviews & Compare

Navien boilers first arrived in the UK in 2015, after becoming the first company in Asia to design and manufacture highly efficient condensing boilers.

Their range of boilers include combi and system boilers that run on natural gas as well as oil-fired system and regular boilers. Navien have quickly built up a reputation for manufacturing highly efficient boilers and they come with lengthy warranties which shows their reliability.

  • Output rating: This is the power of the boiler and gives an idea of whether a boiler will be suited to the size of your property. Output ratings are measured in kilowatts (kW) and you’ll find that all boilers have a central heating (CH) output while combi boilers also have a domestic hot water (DHW) output as they deliver hot water on demand.
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  • Efficiency: When investing in a replacement boiler you want to know that it will be converting as much of the fuel (gas or oil, in the case of Navien) into usable energy. This is the efficiency rating and is displayed as a percentage. Navien boilers are recognised for being highly efficient and you’ll see in our Boiler Comparison Tool that they achieve efficiency levels of 92-93%.
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  • Warranty: The warranty is a promise from the manufacturer that they’ll cover the parts and labour (sometimes one or the other) in the event of a fault developing after the installation of your new boiler.
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  • Price: This is naturally one of the biggest considerations when comparing boilers but Navien don’t make this information visibile without a quote. For a higher end boiler, which Navien manufacturer, you could expect to pay somewhere between £1,000 and £2,000.

Finding the perfect boiler to meet the heating and hot water demands of your home will over comparing different manufacturers and models. Using our Boiler Comparison Tool, you can compare the output, efficiency, warranty and price of up to 4 different boilers. We recommend including your current boiler as part of these comparisons.

Compare the costs of Navien combi boilers

Combi boilers are well suited to properties with 1-2 radiators as they provide hot water on demand, rather than storing it in a hot water cylinder.

Navien NCB combi boilers are available in a range of outputs, meaning there’s a model for most homes, whether you have a fairly low or high demand for heating and hot water. View the complete range of Navien Combi gas boiler prices using the table below.

Boiler Model kW Efficiency Warranty Typical Price
Navien NCB 24kW Combi Gas Boiler 24kw 92% 7 years £N/A VIEW
Navien NCB 28kW Combi Gas Boiler 28kw 93% 7 years £N/A VIEW
Navien NCB 34kW Combi Gas Boiler 34kw 93% 7 years £N/A VIEW
Navien NCB 40kW Combi Gas Boiler 40kw 93% 7 years £N/A VIEW

Compare the costs of Navien System Boilers

Navien system boilers need to be installed as part of a heating system which also includes a hot water cylinder allowing them to meet higher demands for domestic hot water. With a range of System boilers available in different outputs, there’s a suitable Navien system boiler for almost any home.

Boiler Model kW Efficiency Warranty Typical Price
Navien NCB 20kW System Gas Boiler 20kw 92% 7 years £N/A VIEW
Navien NCB 23kW System Gas Boiler 23kw 93% 7 years £N/A VIEW
Navien NCB 28kW System Gas Boiler 28kw 93% 7 years £N/A VIEW
Navien NCB 33kW System Gas Boiler 33kw 93% 7 years £N/A VIEW

Compare the costs of Navien oil boilers

Navien oil boilers are a highly efficient option for properties that aren’t connected to the gas network. And with warranties of 10 years, you can be confident in their reliability and longevity.

Boiler Model kW Efficiency Warranty Typical Price
Navien LCB700 21kW Internal System Oil Boiler 21kw 93% 10 years £N/A VIEW
Navien LCB700 28kW Internal System Oil Boiler 28kw 93% 10 years £N/A VIEW
Navien LCB700 36kW Internal System Oil Boiler 36kw 93% 10 years £N/A VIEW
Navien LCB700 21kW Internal Regular Oil Boiler 21kw 93% 10 years £N/A VIEW
Navien LCB700 28kW Internal Regular Oil Boiler 28kw 93% 10 years £N/A VIEW
Navien LCB700 36kW Internal Regular Oil Boiler 36kw 93% 10 years £N/A VIEW
Navien LCB700 21kW External System Oil Boiler 21kw 93% 10 years £N/A VIEW
Navien LCB700 28kW External System Oil Boiler 28kw 93% 10 years £N/A VIEW
Navien LCB700 36kW External System Oil Boiler 36kw 93% 10 years £N/A VIEW
Navien LCB700 21kW External Regular Oil Boiler 21kw 93% 10 years £N/A VIEW
Navien LCB700 28kW External Regular Oil Boiler 28kw 93% 10 years £N/A VIEW
Navien LCB700 36kW External Regular Oil Boiler 36kw 93% 10 years £N/A VIEW
Navien LCB700 21kW Internal Combi Oil Boiler 23 kw 93% 10 years £N/A VIEW
Navien LCB700 28kW Internal Combi Oil Boiler 30.3 kw 93% 10 years £N/A VIEW
Navien LCB700 36kW Internal Combi Oil Boiler 39 kw 93% 10 years £N/A VIEW
Navien LCB700 21kW External Combi Oil Boiler 23 kw 93% 10 years £N/A VIEW
Navien LCB700 28kW External Combi Oil Boiler 30.3 kw 93% 10 years £N/A VIEW
Navien LCB700 36kW External Combi Oil Boiler 39 kw 93% 10 years £N/A VIEW

If you’re looking to replace your current boiler with a highly-efficient Navien boiler that could help to lower your energy bills, you can get up to 3 free boiler replacement quotes from Gas Safe engineers near you.

Navien combi boilers & prices

Navien’s range of NCB Combi boilers are incredibly powerful, and unlike most Combi boilers available on the market, can meet the heating and hot water demands of larger homes. Most Combi boilers are able to provide hot water to a single tap or shower, whereas Navien Combi boilers are able to power up to 3 showers with hot water all at the same time.

Benefits of a Navien NCB combi boiler

  • Can be installed just about anywhere around a property, thanks to the available flue lengths
  • Quick response to demand for hot water
  • Touchscreen control delivers easy-to-use controls
  • High efficiency ratings of up to 93%
  • Quiet operation

In addition to all of these benefits, that you’ll be able to enjoy as standard, there’s an optional outdoor weather sensor, which means that the unit will be able to regulate the indoor heating temperature depending on the conditions outside.

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Navien System Boilers & Prices

Endorsed by the Energy Saving Trust, Navien System boilers are an efficient and reliable way of meeting the heating and hot water demand of your home.

If you’re looking for a boiler that can make your home more environmentally friendly, while also help to lower your energy bills than a Navien System boiler is the perfect choice. For increased efficiency, Navien boilers can be paired with renewable heating systems, such as solar thermal.

As a wall-mounted, compact unit, the Navien System boilers are quick and simple to install and makes future servicing much easier for the heating engineer.

Benefits of a Navien NCB system boiler

  • Connect boiler to a smartphone for complete control
  • Supplied with an LPG conversion kit
  • Compact size of 695mm x 440mm x 358mm (HxWxD)
  • Flexible flue length of up to 110m
  • Compatible with solar thermal

Navien oil boilers

Navien’s range of LCB700 oil boilers bring revolutionary blue flame technology to the oil boiler industry which guarantees higher efficiency and lower NOx emissions than oil boilers with a yellow flame.

An efficiency rating of 93% means that for every £1 you spend on heating your home, you’ll be getting 93p worth of heat. That’s a large saving when you consider that older oil boilers might only provide 65p worth of heat for every £1. Thanks to being highly efficient and helping to keep energy bills down, LCB700 boilers have an ErP A+ rating.

As well as being highly efficient, LCB700 boilers offer the industry’s lowest NOx emissions (57mg/kWh) making it more economical and kinder on the planet than older units.

LCB700 boilers have a range of options to make them suitable for just about any home. From a choice of internal or external installation to venting of up to 110m (Big Ben is 96m), there’s no shortage of choice.

There’s no need for a separate thermostat with an LCB700 oil boiler as the unit itself includes an intuitive panel that offers a text-driven menu, zone control, visibility of energy consumption and how much that is costing you, as well as domestic hot water control.

Navien Boiler Service

To keep your Navien boiler running safely and efficiently, as well as keeping the warranty valid, you will need to arrange an annual boiler service by a fully-qualified heating engineer.

A Navien boiler service will also bring any small issues to the attention of a professional before it’s able to develop into something much worse. Helping you to avoid a large repair bill further down the line.

Navien Boiler Warranty

The warranty should be an important part of your considerations when comparing replacement boilers. It’s your insurance policy should a fault develop within the unit and gives you the peace of mind that you’re covered by the manufacturer.

All boilers come with a standard warranty, usually lasting between 1-10 years, with the option to extend in some cases. It’s important to check the terms and conditions of the warranty so that you know what the manufacturer covers, if it can become invalid and how long you’re covered for.

One thing you need to remember to arrange, in order to keep the warranty valid, is an annual boiler service by a Gas Safe engineer. take a look at Navien Boiler Warranty.

Navien Boiler Repair Advice

Even the most reliable boilers can develop faults, especially as they age. There are some faults you can repair yourself but the majority should only be repaired by a Gas Safe engineer.


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Navien Boiler Error Codes

Should there be an issue with your Navien boiler, the digital screen will display a code to help you identify the cause of the problem. This could range from something simple that you could resolve yourself, such as low boiler pressure, right up to something technical that requires the expertise of a fully-qualified heating engineer. Take a look at our comprehensive list of Navien boiler error codes to help you find out what they mean.

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