Wm. Donnelly & Co Ltd are pleased to offer the following phenomenal offer.


Get a brand new award winning Navien NCB-H 28kw boilers supplied and fitted from £2000.00 by Wm Donnelly & Co, preferred installers of Navien.  10 year warranty on this with us being their accredited installer.

Class leading flue lengths and NPX5 rating mean the Navien NCB can be installed almost anywhere in your property. With total siting flexibility the blue touchscreen  gives full control of heating and hot water temperatures, the screen will even provide the Wm. Donnelly & Co Ltd engineer with details of how efficiently the unit is preforming.
The traditional stainless steel and brass construction means built in reliability combined with the high efficiency for which Navien are famous.
All Navien heating units are capable of using Natural Gas and LPG straight out of the box meaning no worries you have the correct unit weather you live in the centre of London or in the highlands of Scotland.
The Navien NCB comes “open therm” ready this will give instant access to the latest control technology with minimum disruption and less cost on installation.
The Navien NCB is not just a standalone unit it can be combined with all other Navien products, combination boiler, water heater and mCHP to provide the perfect solution to small and medium commercial requirements.


Features & Benefits
  • SEDBUK A rated condensing efficiency and low pollutant emissions
  • Integrated primary and secondary stainless steel heat exchangers prevent corrosion and erosion ensuring an extended lifespan
  • The full modulation system continuously optimizes its Heat/DHW output
  • Extended venting up to 20M is possible, allowing flexible installation options
  • An optional outdoor weather sensor (known as compensation sensor) enables the boiler to run in condensing mode
  • Quick DHW supply function provides ideal solution for inconvenient wait
  • Self-diagnosis and error feedback feature offers quick trouble shooting guide
Modern and eye-catching touch panel design
  • Stylish touch-type control panel adds visual appeal and is easy to use.
  • RESET, DHW only, and Temperature Control available
  • INFO button gives you useful information on LPM, supply/return water temperatures, etc.
  • ECO button allows water and energy savings.
Modulating of Heating and DHW (TDR Capacity Range)
  • The full modulation system continuously optimizes its Heat/DHW output.
  • NCB-40LSWE model provides turn down ratio of 10:1.
Comfortable indoor temperature with weather compensation sensor (supplied as optional)
  • Regulates the heating temperature according to changes in outside temperatures.
  • Ensures precise indoor heat regardless of external weather conditions.
  • Enables the boiler to run in condensing mode operating at its maximum efficiency.

To enquire about this offer please use any of the following methods.

Email – Info@donnellyuk.com

Phone – 01355909000

Facebook – Click Here

Contact us form – Click Here

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