Boiler Service Cost and What's Included

A standard gas boiler service with BASI is £80 and takes about an hour. That covers a full manufacturer-approved check of the boiler, the safety tests and a written service record for your warranty. It is a fixed price, not a starts-from figure, and there is no separate call-out charge on top.

That is the direct answer. Here is what that hour actually buys and why skipping it costs more than it saves.

What a proper service includes

A real annual service is more than a quick look. On a standard gas boiler it covers:

Visual inspection of the boiler and its installation for obvious faults or corrosion
A flue gas analysis to check the boiler is burning safely and efficiently
Checking gas pressure and flow against the manufacturer’s figures
Inspecting seals, the heat exchanger area and the burner
Checking safety devices operate correctly
Confirming the flue is sound and clear
A written service record completed for your warranty

If anything needs attention you are told straight away, with the cost, before any extra work is agreed.

Why £80 fixed, not starts-from

Every cost-guide search for boiler servicing leads with a starts-from price that climbs once a call-out fee or add-ons appear. Ours is £80, fixed, no separate call-out. You know the number before the engineer arrives, the same principle we apply to new boiler installation pricing.

Why it protects your warranty

Most manufacturer warranties become invalid if you skip the annual service. On a boiler still inside a 10-year warranty, missing one service can turn a covered repair into a bill running into the hundreds or thousands. The £80 is cheap insurance against that.

What it does for running cost

A clean, correctly adjusted boiler burns less gas than a neglected one. A service is not a magic saving, but a boiler that is running right uses less fuel and breaks down less often, so over a year it tends to pay for itself.

How long it takes

About an hour for a standard gas boiler. We carry out the checks, complete the written record and tell you on the spot if anything needs doing. No need to take the whole day off.

Landlords and CP12

If you let a property, the law requires a gas safety check every 12 months on every gas appliance. We issue the CP12 Landlord Gas Safety Record the same day and email it to you and your letting agent. A single-appliance CP12 is £80, and the check can be done up to two months early without moving the renewal date.

Bundling and cover

If you would rather not remember to book it each year, the annual service can be built into a cover plan by monthly direct debit, so the service is never missed and small faults are caught early. Our Smart Care cover plans include the annual service, or you can stay with a one-off booking.

All makes, not just our install brands

We service every common domestic gas boiler, not only the brands we install. Worcester Bosch, Vaillant, Ideal, Baxi, Glow-worm, Potterton, Viessmann and more, the same £80 fixed price and the same written record. You do not need to have bought the boiler from us, and you do not need to go back to the original installer to keep a warranty valid, an accredited annual service from us protects it just the same.

What happens if something is found

The point of a service is to catch small problems before they become breakdowns. If the engineer finds something, you are told straight away with the cost, and nothing extra is done without your say-so. There is no pressure and no commission-driven upselling. Often it is a minor adjustment done on the spot at no extra cost; occasionally it is a part that is failing, in which case you get an honest recommendation and a clear price before any work goes ahead.

When to book

Late spring and summer are the best time. Engineers are less stretched than in the October to January rush, so you get more appointment choice and the boiler is checked before you actually need it in winter. Leaving it until the first cold snap means joining the queue when every engineer in Yorkshire is busy, so booking ahead is both cheaper on your nerves and easier to schedule.

When you are ready, book a £80 boiler service and we will get it done properly with the written record for your warranty.