How Much Does a Boiler Service Cost in 2022? [Detailed Guide]

Wondering if boiler service is worth your money? You’re in the right place — our 5-minute guide to boiler service costs covers everything from prices to tips for avoiding repairs through good boiler maintenance.

How Much Does a Boiler Service Cost

If you’ve suffered a boiler breakdown and are considering a replacement, we’ll also give you a chance to compare (fixed) prices for top boiler models on your screen.

How Much Is a Boiler Service?

Gas boiler service typically costs between £70 and £90. For this price, you get a full inspection, flue gas tests, and a magnetic system filter clean-up (if you’ve got one). However, note that these numbers exclude the cost of parts and labour needed to perform repairs.

Why Do Boiler Service Prices Vary?

Firstly, the average cost of servicing a boiler will vary depending on your location. For instance, if you service a boiler in London, you’ll be stuck paying in the higher end of the price bracket.

You’ll likewise pay more by opting for a well-known national energy supplier and gas boiler servicing company, like British Gas. National firms that offer boiler services charge in the region of £110-135.

Average boiler service cost

If you have other gas appliances, you can have them bundled in to reduce the overall price. The service of a boiler, gas fire, and hob is likely to be in the £100-£125 range.

Servicing Oil Boilers

Note that if you have an oil boiler, you’ll likely pay a bit more for service than you would for gas boilers. That’s because oil boilers come with a fuel tank that also requires maintenance.

Does One-0ff Gas Boiler Service Cost More?

One-off boiler service shouldn’t cost you any more than an annual boiler service plan — the average costs are still in the neighbourhood of £70-90.

That said, it’s always best to service your boiler at least once a year. That’s because regular annual service can catch issues before they deteriorate and lead to a full-out boiler replacement.

Still, one-off service is better than no service at all, just like spending £70-90 on service is far better than dropping £2,000 on a brand new boiler.

How Often Should I Have My Boiler Serviced?

We recommend getting an annual boiler service. In fact, most boiler manufacturers won’t honour their warranty unless your boiler has been serviced by a Gas Safe Engineer every 12 months.

So, if you’ve got a reasonably new boiler, opt for regular service and be sure to obtain a receipt for it. Most Gas Safe heating engineers will be able to provide a receipt with a description of works (including flue gas tests), which you can present to the boiler manufacturer if you need to use the warranty.

Where Can I Find a Gas Engineer to Complete Service My Boiler?

You can find local Gas Safe Engineers on the Gas Safe Register. All professional tradesmen who work on gas appliances (such as your boiler), must have Gas Safe registration.

So, if you’ve got a quote from a local heating engineer, take their Gas Safe number and ensure it checks out by referring to the register above.

What kind of fuel does your boiler use?

Fixed price online with next day installation

Worcester boilers from as little as £1,965.

What Should Be Included In the Boiler Service Cost?

The boiler service cost should include an inspection of your appliance, a flue gas test, and a clean-up of your magnetic filter. 

Always ask your boiler engineer for a description of works, including the results of any tests they’ve run.

Landlords require (by law) a Gas Safety Certificate on completion of the service. Once the procedure is completed, landlords will get the following information on their boiler service certificate:

  • Details of flue and flue gas tests
  • Gas Safe number, engineer’s name, company name, and address
  • Issues uncovered from the inspection and advice on what to do next
  • Details of any issues that are cause for immediate safety concerns
  • Details of additional appliances checked (i.e. fire or hob)

This certificate isn’t necessary for homeowners, although you can request one too.

Extras to Be Included In Your Boiler Service Cost

It’s wise to ask for the following extras when you request the service: 

  • A quick inspection of all internal boiler parts
  • Check boiler pressure loss, and inspect heating system for leaks if there is

Make sure you ask for these additional tests when you book a boiler service, as they may affect the cost of the boiler service.

Parts Inspection

Boiler repair is often needed because engineers’ boiler inspection doesn’t cover all of the boiler’s parts. But by requesting a more thorough inspection, you may prevent massive repair costs and prolong your boiler’s life. And in the world of heating, prevention is usually far cheaper than the cure — new boilers can cost a lot, possibly setting you back over £2,000 with installation. 

Whether you’ve got a regular, system, or combi boiler, inspecting the components below will make the largest impact on your boiler’s lifespan:

  • Heat exchanger
  • Pump
  • Fan
  • Gas valve

Boiler Pressure Check

You want the engineer to check for drops in pressure and water leaks. (Leaks kill boilers quickly — if you have one, you want it found and fixed instantly).

Do Worcester, Baxi, Vaillant & Others Brands Boiler Service Cost Vary?

You shouldn’t pay more because you own a specific brand or model — most boilers require the same amount of time to get serviced. 

Many manufacturers have a dedicated installation and a local service team. So, if you’d prefer a heating engineer that specialises in a particular boiler, then you can head directly for their service teams.

However, note that boiler service cost from the manufacturer’s own team may be more expensive.

So, if you need Worcester boiler service, you may save money by not calling an engineer from Worcester themselves. Manufacturers also try and bundle their service with extended warranties and boiler cover that you might not actually need.

That said, you can find details of local service engineers below:

How to Protect Your Boiler Between Service Appointments

Regular service is one way of keeping your boiler in great shape. But if you have a qualified engineer servicing your boiler, it’s worth asking them for the following:

Hot Flush

Your heating engineer will dose the system with chemicals, then flush them through with hot water running though the system. This procedure gets rid of sludge, which causes countless boiler breakdowns.

A power flush is similar, but the central heating system gets subjected to far more than just mains pressure, so older pipework and joints may sustain some damage.

On the other hand, a power flush is a highly effective way to clear out debris from the pipework and radiators.

Magnetic System Filter

With the system flushed, you’ll want to add a central heating inhibitor. This device breaks down heating sludge, so the magnetic system filter can catch it.

Quality brands such as BoilerMag, Fernox and Magnaclean all supply inhibitors and system filters.

Scale Reducer

Finally, check to see if you’re in a “hard water” area. If you are, there’s a high chance of limescale build-up destroying expensive boiler components, like your heat exchanger.

A high quality scale reducer (a limescale filter) will help keep limescale out of your system.

FAQs About Boiler Servicing

Do boilers need to be serviced every year?

Ideally, yes. With most boiler manufacturers, annual service is a requirement to keep the warranty valid.

Annual service will also ensure that your boiler operates as efficiently as possible, and offers a chance to catch defects before they progress.

What is included in the boiler service?

While servicing your boiler, the heating engineer will typically check for safety issues (like Carbon Monoxide leaks) and run a number of tests. They will report on the general condition of the boiler, as well as any pressing safety concerns, and recommend corrective action as needed.

You may also ask your heating engineer to clean out your magnetic and limescale filters, and flush the heating system to clear out sludge. You’ll have to pay extra for the material and labour costs associated with these services.

Also, note that repairs aren’t included in boiler servicing; you’ll have to pay an additional sum if any of the boiler’s components need to be fixed or replaced.

How often should a boiler get serviced?

If you want your manufacturer’s warranty to remain valid, you should get annual service for the boiler.

But doing so has plenty of other benefits, too, like finding flaws before they deteriorate, and cleaning debris out of the central heating system. Compared to boiler repairs or replacement, boiler servicing costs are quite low, so it’s never a good idea to skip out on regular servicing to save money.

Can I service my own boiler?

No, you’ll need a Gas Safe registered engineer to run gas boiler checks, or an OFTEC engineer to perform oil boiler service.

Not only is it unsafe for an unqualified person to handle appliances that run on natural gas or oil, but a professional heating engineer has the expertise needed to identify issues and recommend fixes.

How long do boiler last?

On average, modern boilers can be expected to last about 15 years — this applies to all boiler types.

However, since the life span differs widely between different models (even those of the same manufacturer), it’s always wise to consider the boiler warranty being offered. As a rule of thumb, the shorter the warranty, the shorter the life span; and vice versa.

Boiler Servicing: What’s Next?

Thanks for reading our guide to boiler servicing costs.

Thinking about a replacement boiler and wondering about new boiler prices? Use this calculator to determine what size boiler you need, and get a fixed, on-screen price in less than 2 minutes.

If you think we’ve missed anything, or would like to share your own experience with boiler service, please leave our readers a comment below.

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