Since 1999, the heating industry’s own Benchmark scheme has required installers to complete a standard commissioning checklist for every new boiler — a document that also happens to be one of the simplest ways of demonstrating Building Regulations compliance for the work.

What the Benchmark scheme actually is

Benchmark is a nationally recognised industry scheme, managed and promoted by the Heating and Hotwater Industry Council (HHIC), that has promoted improved quality in the installation, commissioning and servicing of heating and hot water systems since 1999. It places responsibility on both manufacturers, who supply the standardised checklist with their products, and installers, who are expected to complete it accurately for every job, in line with best practice and Building Regulations requirements for England and Wales.

What the checklist actually does

The Benchmark Commissioning Checklist is found at the back of a boiler’s instruction manual, alongside a servicing record section for future visits. A conscientious installer completes it at the point of installation to document that the boiler has been correctly installed and commissioned in line with the manufacturer’s specific instructions for that model, and that the householder has been shown how to use the boiler and its controls. It is, in effect, a standardised, manufacturer-backed record of exactly what was done, rather than relying purely on an installer’s word that everything was carried out properly.

How this connects directly to Building Regulations

The link between Benchmark and formal compliance is explicit: completing the Benchmark Checklist is already recognised as a means of meeting the commissioning requirements within Part L of the Building Regulations, which governs conservation of fuel and power. HHIC has described this as the most straightforward way of ensuring compliance, precisely because the documentation already comes supplied with the product rather than needing to be separately created. This is a useful thing to understand for anyone comparing quotes: an installer skipping or rushing the Benchmark checklist isn’t simply cutting a corner on paperwork, but on one of the standard routes to demonstrating the job met the relevant Building Regulations requirement.

Where to find your checklist, and what to check on it

Ask your installer directly for the completed checklist at the end of the job, rather than assuming it will simply be left with the manual without comment. HHIC has also worked towards making completed checklists available online, alongside other scheme documents, at its resources section — worth checking if a paper copy has since been misplaced. When reviewing a completed checklist, confirm it includes the installer’s Gas Safe registration details, the specific model and settings recorded, and a genuine completion date matching your installation.

Why a missing checklist matters beyond the moment of installation

• Warranty claims — many manufacturers require evidence of correct commissioning, often specifically the Benchmark checklist, as a condition of honouring the boiler’s warranty.
• Selling your home — buyers’ solicitors increasingly ask for heating system documentation as standard, and a missing checklist is exactly the kind of gap that can cause delay.
• Future servicing — a completed checklist gives any future engineer a documented starting point for the system’s original settings and configuration.

FAQs

Is the Benchmark checklist a legal requirement, or just an industry scheme?

Benchmark itself is an industry-run scheme rather than a piece of legislation, but completing it is recognised as a way of meeting the Building Regulations Part L commissioning requirement — so in practice, it sits very close to a legal necessity for a properly documented, compliant installation.

Does every boiler manufacturer use the same Benchmark checklist format?

The Benchmark checklist format is standardised across the industry through HHIC, though individual manufacturers supply it within their own specific boiler manuals, tailored to that model’s settings and specifications.

What should I do if my installer didn’t complete a Benchmark checklist?

Ask them for it directly, since it should be a standard part of any professional installation. If they’re unresponsive, HHIC’s resources may help, but a persistently missing checklist is worth raising as a genuine quality concern about the installation itself.

Sources

This guide draws on the following primary sources, current as of 16 September 2026:

• HHIC: HHIC launch updated Benchmark boiler commissioning checklist

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