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Pipes Plumbing
As the others have said, I'd recommend changing your cylinder only (if the boiler is working well), and then replace that with a new system boiler when it eventually gives up.
Combis can struggle to provide a lot of hot water (especially when undersized and when the mains temp is low), I' be worried that you'll spend a lot more than your cylinder replacement on a system that might not work well.
Bear in mind that most new Stainless unvented cyl's will have a long manu's warranty up to 25 yrs....
Combis can struggle to provide a lot of hot water (especially when undersized and when the mains temp is low), I' be worried that you'll spend a lot more than your cylinder replacement on a system that might not work well.
Bear in mind that most new Stainless unvented cyl's will have a long manu's warranty up to 25 yrs....