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Navien 54kW Combi Boiler Pack Internal NCB700 54C
Combi boiler packs

Navien 54kW Combi Boiler Pack Internal NCB700 54C

  • Combi boiler pack
  • 54 kW pack designation
  • supply only, installation quoted separately
£1,881.60
inc. VAT · supply only
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Get it installedFixed fitted prices

Delivery — 2–3 working days to your door

Full payment taken at checkout. Installation by Gas Safe registered engineers available.

Manufacturer warranty

Navien · NCB700

Advertised standard cover

12 years

Manufacturer conditions apply

Conditional extended cover

Up to 12 years

Not automatically included

Emergency replacement

Same-day or next-day boiler replacement available

Boiler gone down? Call us now and we'll book the earliest engineer slot to replace it — subject to survey and engineer availability.

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About this boiler pack

Navien 54kW Combi Boiler Internal NCB700 54C is a combi boiler pack from Navien. The inclusions below describe this bundle; a different flue, filter or control option is a separate pack, even when the boiler model is the same.

A combi boiler supplies central heating and heats domestic hot water on demand, normally without a separate hot-water cylinder. This listing specifies 37.1 kW maximum condensing central-heating output. Its domestic hot-water output is 54 kW. The listed hot-water flow is 22.1 l/min at a 35°C temperature rise. Heating demand and hot-water demand must be assessed separately; incoming water flow and pressure affect tap and shower performance.

Listed casing dimensions are height 695mm, width 440mm, depth 353mm. Allow additional installation and servicing clearances specified in the model's manual; casing dimensions alone do not confirm cupboard suitability or an acceptable flue route.

The verified pack inclusions are listed below. Do not assume additional filters, controls, cylinders or flue extensions are included. An installer should confirm that the selected flue and controls suit the property, fuel supply and manufacturer's requirements.

The displayed pack price is for supply, not installation. Gas work must be undertaken by a suitably qualified Gas Safe registered engineer. BritOne Air can arrange a separate installation quote through UK Gas Plumbers Limited; commissioning, water treatment, controls and any changes to the existing system are assessed as part of that quote.

Manufacturer warranty and extended cover are explained separately below for NCB700. The advertised family term is not confirmation of this pack's entitlement: the exact model generation, registration route, filter and service requirements must be satisfied. Accessories may have their own warranty terms.

Listed pack contents

  • Boiler Only

The contents list may be partial. Confirm all required parts before ordering.

Product specifications

Manufacturer
Navien
Width
440mm
Solar Compatible
Yes
Nox Class
NOx Class 5
Noise Level
51dB
Mount Type
Wall Mounted
Maximum Vertical Flue 125mm
70 m
Maximum Vertical Flue 100mm
21 m
Maximum Horizontal Flue 125mm
68m
Maximum Horizontal Flue 100mm
20 m
Listed pack inclusions
Boiler Only
Height
695mm
Fuel Type
Natural Gas / LPG
ErP rating (as listed)
A+
Display Type
Digital Display
Depth
353mm
Hot-water output range
3.5 - 54.0 kW
Domestic hot-water output
54 kW
Hot-water flow at 35°C rise
22.1 l/min
Maximum condensing heating output
37.1 kW
Boiler Type
Combi

Heating and hot-water ratings are separate; missing values are not inferred. Confirm installation clearances in the current model manual.

Manufacturer warranty

Navien · NCB700

Advertised standard cover

12 years

Manufacturer conditions apply

Conditional extended cover

Up to 12 years

Not automatically included

Questions about this pack