Navien Navien NCB 24kW Combi Gas Boiler

Navien NCB 24kW Combi Gas Boiler
Total Cost
Manufacturer Navien
Boiler Model Navien NCB 24kW Combi Gas Boiler
Condensing boiler? condensing
Energy Efficiency Rating 92%
Energy Band A Rating
LPG model/Conversion kit Yes
Manufacturer Warranty 7 Years
Heating Output 21.4 kW
Wall Mounted or Floor Standing Wall Mounted
DHW Flow Rate 13.8 l/min
Total Cost
ERP Rating A Heat A Water
Hot Water Max Output 23.8 kW

Navien NCB 24kw combi boiler review

The Navien NCB 24kw IPX5 rating and flue lengths are world-class. It can be placed almost anywhere on your property. The Navien NCB offers total flexibility when it comes to where it is placed.

The blue touchscreen control provides full control of heating/hot water temperatures. It will also provide details to Navien’s service engineer on how efficient the unit has been performing. Navien’s traditional brass and stainless steel construction is a sign of their reliability and high efficiency.

All Navien heating systems can be used with Natural Gas and LPG directly out of the package.

Navien NCB 24kw are “open-therm” ready. This will provide instant access to the most up-to-date control technology at a fraction of the cost. The Navien NCB does not have to be used alone. It can also be used with any combination boiler, water heater, or mCHP products to create the ideal solution for small to medium commercial requirements.

Why choose the Navien NCB 24kw combi boiler?

  • SEDBUK A has a high rating for condensing efficiency (low pollutant emission)
  • Integrated primary and second stainless steel heat exchangers are resistant to corrosion and erosion and provide a long-lasting service life.
  • The whole modulation system continually optimizes Heat/DHW output
  • Extended venting is possible up to 20M, which allows for flexible installation options
  • Optional outdoor weather sensor (also known as compensation sensor), allows the boiler to operate in condensing modes.
  • Fast DHW supply function makes it easy to avoid long waits
  • The self-diagnosis and error feedback feature offer quick troubleshooting guidance

The Navien NCB 24kw combi is easy to use

  • A stylish touch-type control panel with a modern design adds visual appeal and makes it easy to use.
  • RESET, DHW and Temperature control available
  • The INFO button offers useful information such as LPM, supply/return water temperatures and so on.
  • The ECO button allows for water and energy saving

How efficient is the Navien NCB 24kw combi?

  • The whole modulation system continually optimizes Heat/DHW output.
  • NCB-LSWE model has a turn-down ratio of 10 to 1.
  • Comfortable indoor temperatures with weather compensation sensor (optional)
  • The heating temperature is adjusted to the outside temperature.
  • You can be sure of precise indoor heat, regardless of the weather outside.
  • This allows the boiler to operate at its maximum efficiency in condensing mode.

What is the Cost of a Navien NCB 24kw Boiler?

The Navien NCB 24 combi boiler costs around £800. This does not include the installation of the boiler by a Gas Safe registered heating engineer.

Other than the 24kw, the Navien NCB Combi has a range of outputs: Navien NCB 28kW combi and Navien NCB 34kW combi. It also costs between £800 to £1000 with no installation. Costs for installing a Navien NCB 24kw combi boiler vary depending on where you live and the cost of installation. You should request a fixed price quote from several local and national installers to get the best price on a Navien NCB combi boiler.

How do I find out if the Navien NCB 24kw Boiler is suitable for my Home?

Combination or combi boilers do not require any additional components such as tanks in the loft, or hot water storage cylinders in the airing cupboard. This makes them great for small homes. They heat water from the mains, but they can’t handle more than one tap at once. Navien NCB Combi comes in four sizes. It is ideal for homes with only one bathroom.

You don’t want to make the wrong decision when choosing a boiler size or output. It’s best to have a Gas Safe registered engineer visit your home to give you a recommendation.

Who are our fitters?

We use our own Gas Safe installers and the best installers the UK has to offer. Every single one is Gas Safe registered and has been thoroughly vetted.

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