These two products sound the same and they're not. Knowing the difference will save you £200 a year if you have a new boiler, or save you a £2,000 bill if you have an old one.
Two completely different products
Annual boiler service is a single engineer visit, once a year, where the engineer:
- Checks the boiler is operating safely (no gas leaks, correct combustion)
- Cleans key components (heat exchanger, condensate trap, electrodes)
- Measures gas pressure and flue gases
- Issues a Gas Safe certificate proving the work was done
It costs around £80–£120 for a one-off, or £5.99–£8/month as a subscription. The boiler still works the way it worked before — service isn't a repair; it's a check-up.
Boiler cover (also sold as boiler insurance, breakdown cover, or HomeCare) is a subscription that pays for repairs when something goes wrong. You pay £15–£25/month plus a callout fee, and when the boiler fails, the provider sends an engineer, parts are included, and you don't get a separate repair bill.
The two products are complements, not alternatives. Most providers' cover plans actually include the annual service — because skipping the service is what causes most breakdowns.
What's covered in each
| Annual service | Boiler cover | |
|---|---|---|
| One yearly safety + efficiency check | ✅ | ✅ (included) |
| Gas Safe certificate | ✅ | ✅ |
| Engineer visits when boiler breaks | ❌ pay-as-you-go | ✅ |
| Parts when boiler breaks | ❌ pay-as-you-go | ✅ (within plan limits) |
| 24/7 emergency line | ❌ | ✅ |
| Replacement if beyond repair | ❌ | ✅ on top tier only |
| Annual cost (typical) | £72–£100 | £190–£290 |
| Per-callout cost when faulty | £80 + parts | £0–£139 depending on plan |
When you need just a service
If all of these are true:
- Your boiler is under 8 years old
- It's never broken down on you
- You can absorb a £400–£800 surprise repair without it ruining your month
- You'd rather pay-as-you-go for the rare problem than monthly insurance
Then a service-only subscription (~£6/month) is enough. You stay legally serviced, manufacturer warranty stays valid, and you save ~£10/month vs the cheapest cover plan. The first time the boiler costs you £600, the saving evaporates — but that might be year four or year seven.
When you need full cover
If any of these are true:
- Boiler over 8 years old
- It's failed once or more in the past three years
- A £600 surprise bill would be painful
- You rent the property out (tenants need a working boiler now, not next week)
- You just don't want to think about it
Then a cover plan beats service-only. The maths is around break-even at "once every two years"; certainty + 24/7 access is the real value.
The "cover but skip the service" trap
A lot of people sign up for boiler cover and then skip the annual service. This is the worst position for two reasons:
- You're paying for cover that the provider can refuse to honour. Almost every UK cover policy requires an annual service as a condition. Skip it, fail to repair-claim, the provider says "we refused because you didn't service it". Money down the drain.
- Unserviced boilers fail twice as often. Sludge, scale, and dust build up. Pumps wear faster, heat exchangers crack, condensate blocks. You'll claim — and they'll decline.
If you're on cover, take the service. It's almost always included; just book it.
Quick decision tree
- Older boiler, want peace of mind → Boiler Care (service + cover, £15.99/mo+)
- New boiler, just legally serviced → Annual Boiler Service (£5.99/mo)
- Multiple properties or rental → Boiler Care
- Boiler 15+ years old → Boiler Care Complete (includes replacement contribution)
- You like spreadsheets and have £600 in a "boiler" emergency fund → Service only, pay-as-you-go for any repairs
If you're not sure, our online quote tool asks four questions and recommends. No card needed.