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.
Got it. Thank you.
Keep your phone close — we’ll ring the number you gave us. Need someone sooner? Call 0203 488 0733.
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.
What we do on Navien boilers
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Navien boiler repair
We find the fault first, then give you a price.
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Navien boiler service
A yearly service helps keep your warranty in place.
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Navien boiler installation
The right size for your home. Price agreed before we start.
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Replacing a Navien boiler
You see the cost to fix and the cost to replace. Then you choose.
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.
Other boilers we look after
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.