Is boiler cover worth it, or are you just paying for peace of mind?
Boiler cover sits in an odd spot. Providers make a profit on it overall, which means most customers pay in more than they claim back. Whether it is worth it for your household depends far more on your boiler’s age and your own savings buffer than on any generic answer.
With the colder months approaching and nobody wanting to find out their boiler is dead on the coldest night of the year, this is the right time to work out where you stand.
What does boiler cover actually include?
Most plans bundle an annual service with cover for breakdowns and call outs. Prices vary widely by boiler age and level of cover, so treat any headline figure as a starting point and get a quote for your own boiler rather than budgeting from an average.
Read the exclusions before anything else. Boiler cover often won’t pay out for a fault caused by poor maintenance, and a boiler over a certain age, commonly around 7 to 10 years, may be excluded entirely or cost noticeably more to insure.
What a repair actually costs without cover
This is the number the whole decision turns on, so it is worth being precise rather than vague.
| Job | Typical cost |
|---|---|
| Annual service | £70 to £150 |
| Average repair | Around £300, ranging roughly £120 to £750 |
| Emergency call out | Nearer £450 on average |
| Diverter valve | £150 to £300 |
| Fan | £200 to £350 |
| PCB, the control board | £250 to £450 |
| Heat exchanger | £350 to £500 and up |
| Full replacement | Around £4,000, ranging roughly £1,500 to £5,000 |
A like for like combi swap in the same location comes in at roughly £2,500 to £4,000 supply and installed. Note that the £1,500 figure sometimes quoted for a new combi is the boiler itself before installation labour, not the job. Budgeting from the supply only price is the most common way people underestimate what a failure actually costs.
Two things follow. The emergency call out figure is the one that bites in January, not the average repair. And a single major component, a control board or heat exchanger, can produce a bill in the hundreds without the boiler being beyond saving at all.
When boiler cover genuinely pays off
It tends to earn its keep for an older boiler with no manufacturer’s warranty left, where a major repair or a replacement running to several thousand pounds would be hard to absorb. It also suits anyone who would rather pay a predictable amount each month than face a sudden bill, or who has no savings set aside for an emergency repair.
It makes much less sense for a newer boiler still under manufacturer warranty, since you would effectively be paying twice for the same protection. Check the warranty length before you buy anything, because modern boilers often carry five to ten years.
Is self insuring a better bet?
Plenty of households do the maths and skip cover, paying for an annual service directly and setting aside the difference. If your boiler stays healthy for several years, this usually works out cheaper than a policy.
The risk is obvious: if the boiler fails badly in year one, you have not built much of a buffer yet. Given the replacement figures above, the honest version of self insuring is holding enough to absorb a four figure bill, not just a call out. It is a genuine trade off between predictability and probable long run cost, not a choice with one correct answer.
The renewal trap worth knowing about
Boiler cover is usually set to renew automatically, and the renewal price is often higher than the deal you first signed up on. It is the same pattern as car and home insurance: the introductory price is the sharp one, and loyalty costs you.
Put a reminder in your calendar a month before renewal. Check the new price against what a fresh customer would pay for the same cover, and against simply paying for an annual service yourself. A five minute check once a year is usually the single most valuable thing you can do with this product.
What to check before you buy or renew
Compare what’s actually included, not just the headline price. A plan that bundles the annual service can beat a cheaper plan that charges separately, once you add the service cost back in.
Check the excess, the call out response time promised, and whether parts are covered or just labour. And if you have a trusted local engineer, weigh that against what cover is actually protecting you from. Our guides on heat pump running costs and smart thermostat savings cover other ways to keep winter heating costs down alongside whatever you decide here.
Key takeaways
- The average boiler repair is around £300, but an emergency call out averages nearer £450 and a full replacement around £4,000.
- The £1,500 figure often quoted for a combi is the boiler alone, not supply and installation.
- Cover tends to pay off most for an older boiler with no warranty left.
- A newer boiler under manufacturer warranty rarely needs it yet.
- Self insuring can be cheaper long term, but means holding enough to absorb a four figure bill.
- Check the renewal price every year. It is usually higher than the price you joined on.
Frequently asked questions about boiler cover
- How much does a new boiler actually cost?
- Around £4,000 on average, with a realistic range of roughly £1,500 to £5,000. A like for like combi swap in the same spot is typically £2,500 to £4,000 supply and installed. Lower figures usually refer to the boiler alone, before labour.
- Does boiler cover include the annual service?
- Some plans do, some charge separately. Always check, since a plan without a bundled service can end up more expensive once you add a £70 to £150 service on top.
- Is boiler cover worth it for a new boiler?
- Usually not straight away, since most new boilers come with a manufacturer’s warranty covering several years, often overlapping with what a policy would offer.
- What does boiler cover typically exclude?
- Faults from poor maintenance, pre existing issues, and sometimes boilers past a certain age are common exclusions. Read the policy wording rather than assuming.
- Will my cover renew automatically?
- Usually yes, and often at a higher price than you first paid. Diarise a check a month before renewal and compare against the new customer price.
- Is home insurance boiler cover the same as a standalone plan?
- Not always. Some home insurance policies bundle limited boiler cover, but it’s often less comprehensive than a dedicated plan, so check what’s actually included.
There’s no single right answer on boiler cover. Work out your boiler’s age, what a four figure bill would mean for you, and whether a warranty is already doing the job, then decide from an informed position rather than a sales call.
Sources
- Smart Plan, UK boiler repair costs. The average repair of around £300, the £450 emergency call out, component costs for diverter valve, fan, PCB and heat exchanger, the £70 to £150 annual service, and the replacement range.
- Checkatrade, New boiler cost guide 2026. The £2,500 to £4,000 like for like combi replacement supply and installed, and the distinction between supply only and installed pricing.
Checked 25 September 2026. Prices vary by region, boiler type and engineer, so use these as a guide to the scale of the bill rather than a quote.
