Reviewed by the Gas Safe registered heating engineers at Domestic Group+ (Domestic Heating Team), Hertford. Last updated: July 2026.
Quick answer: is boiler cover worth it?
Boiler cover is usually worth it if your boiler is more than five to seven years old, out of manufacturer warranty, or you would struggle to find £500 to £3,000 for an unexpected repair or replacement. For a typical Hertfordshire home, a boiler service plan costs around £15 to £25 a month and bundles an annual service, unlimited call outs and parts and labour into one predictable payment. If your boiler is new and still under warranty, a lower cost annual service is often enough, and you can add full cover later. The right answer depends on the age of your boiler, your appetite for a surprise bill, and what the plan actually includes.
The honest version: boiler cover is insurance, not a money making scheme. In a year with no breakdowns you pay for peace of mind you did not use. In the year your heat exchanger fails on the coldest night of winter, it can save you thousands and get an engineer to your door fast. Below we explain the difference between a service plan and a cover plan, what is included and excluded, what it should cost in 2026, and how to decide.
Boiler cover vs boiler service plan: what is the difference?
People use these terms interchangeably, but they are not the same thing. Getting the difference right is the key to not overpaying.
| Type | What it covers | Best for |
|---|---|---|
| Annual boiler service only | A once a year safety and efficiency check by a Gas Safe engineer. No repair cover. | New boilers still under manufacturer warranty |
| Boiler service plan | Annual service plus breakdown repairs, parts and labour, and call outs, spread over monthly payments | Boilers out of warranty, or anyone wanting predictable costs |
| Full central heating cover | Everything in a service plan plus wider heating parts such as radiators, pumps, valves and controls | Older systems, landlords, larger homes |
| Manufacturer warranty | Repairs on a new boiler for a fixed number of years, provided you keep up the annual service | Homeowners in the first 2 to 10 years after installation |
The most common mistake is paying for full cover on a boiler that is still under a long manufacturer warranty. In that case you may only need the annual service to keep the warranty valid. The second most common mistake is the opposite: running a 12 year old boiler with no cover at all and getting caught out by a £600 repair.
What does boiler cover actually include?
A good boiler service plan or cover plan typically includes:
- An annual boiler service by a Gas Safe registered engineer, which also keeps your manufacturer warranty valid.
- Repairs to your boiler and controls, including parts and labour.
- Unlimited call outs during the plan, so a repeat fault does not mean repeat bills.
- Priority or same day response, which matters most in winter when demand is highest.
Higher tiers often add full central heating cover (radiators, pipework, pumps, valves and the hot water cylinder) and sometimes plumbing and drains, or electrical cover. Always read the summary of what is included before you sign.
Common boiler cover exclusions to watch for
Cover is only as good as its small print. The usual exclusions and catches are:
- Pre-existing faults. A boiler that is already broken cannot be signed up and then claimed on straight away.
- Boilers over a certain age, often 7 to 15 years, or boilers deemed beyond economical repair. If the fix costs more than the boiler is worth, many plans will contribute rather than fully replace.
- An initial exclusion period, usually 14 to 30 days, before you can claim.
- An excess fee on some insurer backed policies, charged each time you call out an engineer.
- Sludge, scale and system design faults that existed before cover started.
At Domestic Group+ our Hertford plans keep this simple: an annual service, unlimited call outs and no excess fees, so you are not hit with a charge every time you need us.
How much does boiler cover cost in the UK in 2026?
In 2026, boiler cover in the UK typically costs between £15 and £30 a month, depending on how much of your heating system you protect and whether there is an excess. Here is a realistic guide.
| Plan level | Typical monthly cost (2026) | What you get |
|---|---|---|
| Annual service only | £8 to £14 | One service a year, no repair cover |
| Boiler and controls cover | £15 to £22 | Service plus boiler repairs, parts and labour |
| Full central heating cover | £22 to £30 | The above plus radiators, pumps, valves and controls |
| Cover with plumbing and drains | £28 to £40 plus | Whole home protection for older or larger properties |
Two plans at the same monthly price are not always equal. A cheaper plan with a £60 excess and a call out cap can cost more across a bad year than a slightly dearer plan with no excess and unlimited call outs. Compare the total likely cost, not just the headline monthly figure. Consumer group Which? makes the same point in its boiler cover guidance: check the excess, the claim limits and the exclusions before you judge value.
Our own boiler cover and service plans in Hertford start from £17 a month with an annual service, unlimited call outs and no excess fees.
Boiler cover vs paying for repairs as they happen
The fair alternative to cover is simply paying for each repair and service yourself. This can work well if you have savings set aside and a newer boiler. To decide, it helps to know what repairs actually cost.
| Typical boiler job | Rough 2026 cost |
|---|---|
| Annual boiler service | £80 to £120 |
| Diagnostic call out | £70 to £120 |
| Replacement thermostat or sensor | £120 to £250 |
| Pump or fan replacement | £200 to £450 |
| Heat exchanger or PCB replacement | £400 to £800 |
| Full boiler replacement | £2,000 to £3,500 |
If you self insure, a single major fault such as a heat exchanger can wipe out several years of the monthly premiums you would have paid. That is the calculation at the heart of the decision: cover trades a small certain cost for protection against a large uncertain one. The older the boiler, the more the odds tip towards cover being worth it.
So, should you get boiler cover? A simple decision guide
Use this as a rough rule of thumb for a Hertfordshire home in 2026.
Boiler cover is usually worth it if:
- Your boiler is more than 5 to 7 years old or out of manufacturer warranty.
- A sudden £500 plus repair would be a real problem for your budget.
- You are a landlord who needs an annual Gas Safety Record and fast repairs for tenants.
- You value a fixed monthly cost and one trusted local engineer over hunting for a plumber mid breakdown.
You might skip full cover, and just take an annual service, if:
- Your boiler is new and under a long manufacturer warranty (you still need the annual service to keep it valid).
- You have savings you are happy to use for repairs and prefer to self insure.
If you are also weighing up whether to replace an ageing boiler rather than keep repairing it, our guide on whether a heat pump or gas boiler is cheaper to run is worth a read, and if a straight swap is on the cards see our boiler installation options in Hertfordshire. And if your boiler is dripping right now, start with our guide to why a boiler leaks water and how to fix it before you decide.
Why an annual service matters either way
Whichever route you choose, do not skip the yearly service. A boiler service by a Gas Safe registered engineer keeps your warranty valid, catches small faults before they become expensive ones, keeps the boiler running efficiently so you spend less on gas, and confirms the appliance is safe. Faulty boilers are a leading cause of carbon monoxide risk in the home, which is exactly why the annual safety check is not something to put off. A service is included in every one of our cover plans, so it happens automatically.
Get local boiler cover in Hertfordshire
Domestic Group+ looks after boilers and central heating across Hertford, Ware, St Albans and the wider Hertfordshire and North London area. Because we are local, our engineers can reach you quickly when the heating goes down, and you deal with the same trusted team every time rather than a national call centre.
Explore our boiler cover and service plans from £17 a month with unlimited call outs and no excess, or if you need a repair or a new boiler first, see our central heating and boiler services. Call our Hertford team on 0800 118 2718 for a straight answer on the right level of cover for your boiler.
Not sure whether to cover or replace your boiler? Book a free boiler health check and we will tell you honestly which makes more sense for your home.
Frequently asked questions
Is boiler cover worth it in the UK?
For most homes with a boiler over five to seven years old or out of warranty, yes. Boiler cover costs around £15 to £25 a month and protects you against repairs that can run from £400 to £800, or a full replacement of £2,000 to £3,500. If your boiler is new and under a long warranty, a cheaper annual service is often enough.
What is the difference between boiler cover and a boiler service plan?
An annual service is a once a year safety and efficiency check with no repair cover. A boiler service plan adds breakdown repairs, parts, labour and call outs on top of that service, spread over monthly payments. Full central heating cover goes further again, protecting radiators, pumps, valves and controls.
How much does boiler cover cost per month in 2026?
Expect roughly £8 to £14 a month for an annual service only, £15 to £22 for boiler and controls cover, and £22 to £30 for full central heating cover. Watch for excess fees and call out caps, as a cheaper plan can cost more across a bad year. Our Hertford plans start from £17 a month with no excess.
Does boiler cover include the annual service?
Yes, a proper boiler service plan includes the annual service as standard, which also keeps your manufacturer warranty valid. An annual service on its own is a separate, cheaper option with no repair cover.
Will boiler cover pay to replace an old boiler?
Not always in full. Many plans exclude boilers over a set age or those deemed beyond economical repair, and may contribute towards a replacement rather than cover it entirely. Always check the age limit and replacement terms before signing up.
Do landlords need boiler cover?
Landlords are legally required to arrange an annual Gas Safety check by a Gas Safe engineer, which a service plan includes. Cover is not a legal requirement, but many landlords choose it for fast repairs and predictable costs across their properties.
