Tier 2 · Gas

Navien boiler repair and servicing across London

A Korean maker with a current UK gas range, known for strong hot water flow.

  • Fault found first, then priced
  • You agree the price before we start
  • Gas Safe registered, fully insured

Mon–Fri 8:00–17:30 · Emergency callout available 24/7

What’s your Navien doing?

Your name, number and postcode is enough to start. The rest can wait.

How soon do you need us?
Tell us a bit more if you like

Quicker to talk? Call 0203 488 0733 or WhatsApp 020 3488 3737

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Know your boiler

About Navien

Navien is best known for combis that push out much more hot water flow than usual. That makes them a good fit if you want a simple combi but use more hot water than a typical one can keep up with. Navien makes oil boilers too. We only work on the gas range.

Faults we often find on a Navien

  • High-output combis chosen for homes that use a lot of hot water
  • Faults in controls and sensors, more than wear and tear
  • Installs where flow rate was the main reason for picking it

This is what tends to crop up, not a verdict on yours. An engineer checks your boiler in person and finds the fault before giving you a price.

How we can help

What we do on Navien boilers

Your questions

Asked about Navien

Will a Navien combi really run two showers?
The bigger models give much more flow than a standard combi. Honestly, though, your incoming mains matters as much as the boiler. If the mains can’t supply the flow, no combi will. We measure your supply before recommending one.
Can you fix and service my Navien?
We can. Our gas work is done by Gas Safe registered engineers. By law, that is what any gas boiler needs, whatever the make.

Navien playing up?

Tell us the model and any code on the screen. Often we can tell you what’s likely wrong before anyone sets off.