BoilerBuying Guide2026-03-10
How to Tell If Your Boiler Is Dying
Rising bills, frequent repairs, noise, leaks and age all signal a boiler near the end.
Boilers give warning signs before they fail. Spotting them lets you replace on your terms.
The warning signs
Age over 12–15 years, rising gas bills, frequent repairs, kettling noise, leaks, slow warm-up and a yellow flame all suggest a boiler nearing the end.
What to do
Get an honest assessment; if repair costs are mounting on an old unit, a new efficient boiler usually pays back through lower bills and rebates.
Key takeaways
- Age 12–15+ years
- Rising bills and repairs
- Noise, leaks and slow warm-up
- Plan ahead of failure
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