How Much Does a Boiler Service Really Cost?

If you’ve ever wondered why your boiler service bill swings from £50 to £150, you’re not alone. The price depends on a few clear factors, and knowing them helps you avoid surprise charges.

What’s Inside a Standard Boiler Service?

A proper service usually covers a safety check, cleaning of the heat exchanger, inspection of the pressure valve, and a test of the controls. The engineer will also look for leaks, assess the gas pressure, and make sure the flue is clear. Most companies charge a flat fee for this package, but some add extra costs for parts or travel.

Typical Price Ranges in the UK

On average, a basic service for a gas boiler runs between £70 and £100. If you have a larger system, a combi boiler with extra components, or a commercial unit, expect £120‑£180. Adding replacement parts—like a faulty pressure relief valve—can bump the total by £30‑£60.

Seasonal offers matter too. Many firms lower rates in spring and autumn when demand drops. Signing up for an annual maintenance contract can lock in a discounted price, often £10‑£20 less per visit.

Don’t forget regional differences. London‑area engineers may charge a higher travel fee than providers in the north, so always ask if mileage is included.

When you compare quotes, look beyond the headline figure. A cheaper quote that skips the flue check or skips a thorough cleaning could cost you later in a breakdown.

Here’s a quick checklist to use when you call a service company:

• Is the price a flat rate for a full service?
• Does it include any parts, or are they billed extra?
• Are travel or call‑out fees added?
• Do they offer a discount for a yearly contract?
• Is the engineer Gas Safe registered?

Answering these questions saves you time and money.

For DIY‑savvy folks, a basic cleaning of the radiators and checking the pressure gauge can stretch the interval between professional services. However, the gas safety check must be done by a qualified engineer—nothing else is worth the risk.

In short, expect to pay £70‑£150 for a standard boiler service, with extra charges for parts or travel. Shop around, ask the right questions, and consider a maintenance contract to keep costs predictable. Your boiler stays safe, your home stays warm, and your wallet stays happy.