A boiler is goods under the Consumer Rights Act like any other appliance — if it breaks down well within a reasonable expected lifespan (most boilers should last 10-15 years), you may have a claim against whoever supplied it, separate from any manufacturer's guarantee.
Contact whoever supplied and fitted it. Repeated breakdowns within the first couple of years, especially of the same fault, is strong evidence of an inherent problem rather than normal wear, and supports a repair, replacement or refund claim.
If you bought supply-and-fit as one package, both the boiler and the installation work are covered — the boiler under the Consumer Rights Act's goods provisions, the fitting under its services provisions (reasonable care and skill).
Usually the installer/supplier you contracted with and paid, not the boiler manufacturer directly — though most boilers also carry a separate multi-year manufacturer's parts guarantee worth checking and using in parallel.
Many manufacturer guarantees require an annual service to stay valid — missing this can affect that guarantee, though your separate Consumer Rights Act claim against the installer for an inherent fault is a different, generally unaffected route.
| Time since purchase | What you can ask for |
|---|---|
| 0–30 days | Full refund |
| 31 days–6 months | Free repair or replacement, then refund |
| 6 months–6 years | Same, but you show the fault is inherent |