ATAG boiler repair and service engineers in London
Premium and specialist, ATAG is a make people usually pick on purpose, not by default.
- Fully insured and Gas Safe registered
- Every fault diagnosed before we quote
- You agree the price before we start
- Our workmanship is guaranteed
Monday – Sunday, 7:00 AM – 10:00 PM · Out-of-hours emergency? Call 020 3576 5825
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ATAG boilers
Known for long warranties on its heat exchangers, ATAG is a premium specialist make that is nearly always picked on purpose, not just because an installer had one on the van. In London, Ninja Plumbers generally meets ATAG boilers where the whole heating system was planned properly, not bolted together later. The models change from time to time, so check the current details instead of leaning on any one model.
The ATAG range
ATAG is a Dutch heating manufacturer selling gas combi, system and heat-only boilers at the premium end of the UK market. Its selling point has long been the heat exchanger, backed by warranties well beyond what most brands offer. It is usually chosen by a homeowner who has researched it, or by an installer who specialises in it and designs the system around it.
Faults we often find on ATAG boilers
- Faults in controls and sensors, not the heat exchanger
- Boilers still inside long manufacturer warranty terms
- Less familiar parts that we order in instead of carrying
- Missed services that could put a warranty claim at risk
- Heating water with no inhibitor, which warranty terms often mention
This list reflects what Ninja Plumbers finds across ATAG boilers in general. It is not a diagnosis of yours, and we confirm any fault on site before giving a price.
ATAG servicing
The long heat exchanger warranty is only as good as its conditions. Those usually include registration and a yearly service by a Gas Safe engineer, and often the condition of the heating water, so check your warranty terms for exactly what yours asks. A good ATAG service therefore looks at the water too: whether inhibitor is present, and whether any system filter has been cleaned.
Repair it or replace it?
While the heat exchanger warranty runs, the biggest failure may well be covered, so check before paying. Outside it, the usual failures are sensors, fans, ignition parts and controls, worth repairing on almost any ATAG because the core is built to last. Replacement only comes up when a major part fails on an older unit outside every warranty, or the house has outgrown the boiler.
Work we do on ATAG boilers
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ATAG boiler repair
We find the fault first, then quote for the fix.
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ATAG boiler service
An annual check, which most manufacturer warranties require.
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ATAG boiler installation
Matched to your home, at a price agreed up front.
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ATAG boiler replacement
You see repair and replacement costs side by side first.
Questions about ATAG boilers
- Will servicing keep my long ATAG warranty valid?
- Most manufacturer warranties need an annual service with a record to prove it, and ATAG is no exception. Read your own warranty paperwork for the precise terms. Whatever the headline length, a missed service is one of the most common reasons a claim gets turned down.
- Why pick ATAG over a better-known make?
- Mostly for the heat exchanger and its warranty, and because installers who fit ATAG usually design the whole system instead of just swapping the boiler. Whether it justifies the higher price depends on how long you intend to stay.
- Can someone other than my installer service my ATAG?
- Yes. A Gas Safe registered engineer from any firm can service it. Warranties usually ask for the service to be done and recorded, not done by a particular company. Some extended warranties backed by installers have conditions of their own, so go by your paperwork.
- Can you repair and service my ATAG boiler?
- Yes. Our gas work is done by Gas Safe registered engineers, as the law requires for any gas boiler, whatever the make.
We handle every make of boiler
Problem with your ATAG?
Tell us the model and whatever fault code the display shows. We can often say what the likely problem is before an engineer is on the way.