BoilerBuying Guide2026-02-24
Combi Boiler Warranty Guide
Warranties hinge on registration and annual servicing — and vary widely by brand.
A long warranty only protects you if you meet its conditions. Here's what to know.
What's covered
Heat-exchanger warranties range from 10 to 25 years by brand; parts and labour terms vary and usually require registration.
Keeping it valid
Most warranties require professional installation and annual servicing with records — skip these and cover can be voided.
Key takeaways
- Heat-exchanger cover varies 10–25 years
- Register the unit after install
- Service annually and keep records
- Use a licensed installer
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