How to Read Your Boiler’s Service History

Understanding your boiler’s service history helps you be confident that your heating is safe, efficient, and less likely to break down. In the pages of your service log, you’ll find the dates when checks were carried out, notes on any repairs, and tips from engineers. By knowing what each entry means, you can spot small issues before they become big problems.

Understanding your boiler’s service records

How to Read Your Boiler/u2019s Service History

Dates & Names

When you open your service log, the first things you’ll see are the date of each visit and the engineer’s name. This simple information proves that your boiler has been looked at at least once a year, as most manufacturers recommend. If you ever need to make a warranty claim, having those dates in order will save you hassle.

What you’ll find in each entry

Under the date and name, the engineer will list what they checked. You might read that the burner was cleaned, the heat exchanger was inspected, or the safety valve was tested. If a part was replaced—perhaps a seal or an ignition lead—that too will be noted. These details tell you which parts have fresh life in them, and which might need attention again soon.

Deciphering technical readings

Some entries include numbers, like flue temperature or gas pressure. On modern condensing boilers, a lower flue temperature means your system is working more efficiently. Gas pressure should stay within the range the manufacturer recommends—anything too low or high can lead to poor heating or safety concerns. If you see readings outside the normal band, it’s a good idea to ask your engineer for an explanation.

Following up on engineer's recommendations

Often, you’ll spot a note suggesting extra work. Maybe the engineer hinted at an efficiency upgrade, flagged a small leak to keep an eye on, or advised tweaking the thermostat settings. Treat these suggestions as gentle reminders: addressing them early can prevent expensive breakdowns later on.

Keeping your own handy file

Beyond the official log, it pays to keep digital copies. Snap a photo or scan each entry, then save it on your phone or computer. Jot down anything you notice between services, like odd sounds or a spike in energy bills. These personal notes give you a fuller picture of how your boiler performs over time.

Get expert guidance on your boiler’s service history in Ealing, Acton and Hanwell

Boiler Boys London will walk you through every line of your service log, help you understand the numbers, and show you how to keep your own records. Call us on 07402806032 and we'll be happy to help.