Gas boilers

The Paperwork You Should Get With a New Boiler

After a new boiler goes in, you should be left with a small but important set of documents. Here's what to expect.

3 min read · Updated October 2026

Benchmark checklist and installation certificate with a rosette seal and a pen

The Benchmark checklist

The Benchmark checklist, usually in the back of the manual or provided digitally, records how the boiler was commissioned – gas rates, combustion readings, system cleaning and controls. It also has a service record for future visits.

Building regulations certificate

In England and Wales, a Gas Safe registered engineer can self-certify that a new boiler installation meets building regulations. You should then receive a compliance certificate, normally by post. Rules differ in Scotland and Northern Ireland, so ask your engineer what applies.

Need a heating engineer?

Describe the job and compare free quotes from local heating engineers near you.

Free to use
No obligation
Compare local engineers
Quick online form

Get Free Quotes

You'll continue to our quotes partner, MyJobQuote, to describe your heating job.

Common questions

What if I don't receive the certificate?

Ask your installer. Gas Safe Register can also help.

Is the Benchmark checklist required?

It's widely used and often a condition of the manufacturer's warranty.

Do I need paperwork for a boiler repair?

Repairs don't usually generate a compliance certificate, but keep invoices.

Keep reading

Gas boiler with a shield and tick symbol and a calendar representing the warranty

Boiler warranties explained

A long warranty is a selling point for a new boiler, but it usually comes with conditions. Here's how to make sure you're covered.

Heating engineer carrying a new boiler box from a van to a house

What to expect on boiler installation day

A new boiler is a big job done quickly. Knowing what happens helps the day go smoothly.

Heating engineer fitting a new boiler, with the old boiler and spare copper pipe on a dust sheet

How to check a Gas Safe engineer

Anyone working on gas appliances in your home must be on the Gas Safe Register. Checking takes a couple of minutes and is one of the most important things you can do before work starts.

Get quotes from local heating engineers

When you're ready, describe the job once and compare free, no-obligation quotes.