ATAG Boilers: iC and iS Range
ATAG is a smaller, premium-positioned Dutch brand in the UK market, known for stainless steel heat exchangers designed for a long working life.
ATAG is a smaller, premium-positioned Dutch brand in the UK market, known for stainless steel heat exchangers designed for a long working life. We occasionally service and repair the iC and iS ranges.
How the range is built
ATAG uses a stainless steel heat exchanger across its range, which the brand positions around long-term durability compared with standard aluminium exchangers.
What we see go wrong
Because ATAG boilers are less common locally, most callouts are for general electronics or sensor faults rather than anything specific to the brand's construction.
Servicing and parts
Parts are sourced through specialist channels rather than general trade counters, so lead times can be longer than for mainstream brands.
Questions we get asked
Are ATAG boilers common in the UK?
They're a smaller-volume brand than most, so we see fewer of them, but we're happy to service and repair them as Gas Safe registered engineers.
Why might a repair take longer on an ATAG boiler?
Parts are sourced through specialist distribution rather than general trade stock, which can add a day or two to turnaround.
Do ATAG boilers need different servicing to other brands?
The annual safety and efficiency checks are the same as any gas boiler — the difference is mainly in parts sourcing, not the service itself.