Boilers · Homeowner answer

How long does a boiler last?

Short answer

Usually around 10 to 15 years with annual servicing. Boilers that are never serviced, or that run on a sludged system without a filter, often fail sooner.

What changes the answer

servicing history
water quality and sludge in the system
whether a magnetic filter is fitted
make and model

What you can check yourself

find the installation date
check for a magnetic filter under the boiler

What to do next

If yours is past 12 years and starting to give trouble, get a replacement price before the next breakdown rather than during it.

Boiler servicing & repairs Send photos WhatsApp

This page gives general information only. Christy needs to see your system — in person or from your photos — before he can give you firm advice or a price.

Keep reading

More on boilers.

All in this section

Baxi E133 fault code — what it means

E133 on a Baxi boiler means the boiler did not establish a flame — the gas supply was interrupted or the boiler could not light. Check the gas supply first, then the condensate pipe in cold weather. If both are fine, it needs a Registered Gas Installer.

C. Kenneally · Oct 2026

Combi, system or regular boiler — which do I need?

It depends on how much hot water you use at once. A combi heats water on demand and suits one bathroom. A system boiler with a cylinder suits two or more bathrooms in use together. A regular boiler with attic tanks is common in older houses and is usually replaced like-for-like unless there is a reason to change.

C. Kenneally · Oct 2026

How much does a new boiler cost in Cork? (2026 price guide)

A straight like-for-like gas combi swap starts at €2,750 including VAT, fitted and certified. An oil boiler starts at €3,200. Changing boiler type, moving the boiler or a new flue route adds to that — which is why the fixed price comes after a survey or photos.

C. Kenneally · Oct 2026