Your bills are creeping up
Boilers lose efficiency as they age, particularly once they're past 10–15 years old. If your heating bills have been rising even though your usage hasn't changed, an ageing boiler working harder to do the same job is a common culprit.
It's breaking down more often
One repair is normal wear and tear. Two or three call-outs in a year — especially if they're for different faults each time — usually means the boiler as a whole is reaching the end of its life, rather than one part simply needing replacing.
Strange noises, smells or leaks
Banging, gurgling or whistling noises can point to a build-up of limescale or sludge, trapped air, or a failing pump. Any leak around the boiler, or a smell of gas or burning, needs attention straight away — a Gas Safe registered engineer should be your first call, and you should turn off the gas supply if it's safe to do so.
It's simply old
Most modern boilers are designed to last 10–15 years. Parts for older models can become harder and more expensive to source, and older, less efficient boilers cost more to run than a new A-rated condensing boiler — so even a boiler that's still limping along may be worth replacing on cost alone.
Not sure whether to repair or replace?
A rough rule of thumb: if a repair would cost more than a third of the price of a new boiler, or your boiler is over 10 years old and has needed more than one repair recently, replacing it is usually the better value option. If you're weighing it up, we're happy to talk it through — get a quote and we'll recommend what actually makes sense for your home.
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