Boiler Cover Plans: Are They Worth It?

Every fresh direct mail leaflet through the door seems to promise the same thing: pay a monthly fee and never worry about your boiler again. Boiler cover plans sound sensible, especially in an older home. But whether they're actually worth the money depends on your boiler's age, its history, and what you're already paying for insurance you might not need.

What boiler cover actually includes

Most cover plans bundle together three things: an annual service, cover for breakdowns, and a callout guarantee (often within 24 to 48 hours). Some throw in central heating controls or pipework. Read the small print carefully, because many plans exclude:

• Boilers over a certain age (commonly 7 to 15 years)
• Pre-existing faults or "wear and tear" that predates the policy
• Call-out charges if an engineer finds no fault
• Parts above a certain cost cap

The exclusions matter more than the headline price. A plan that won't pay out on your actual boiler is just a monthly direct debit for nothing.

The real cost over time

Cover plans typically run from £15 to £30 a month, which is £180 to £360 a year. Over five years that's £900 to £1,800, often with the price creeping up at each renewal. Compare that against a single annual boiler service, which usually costs a fraction of that and catches most problems before they become breakdowns. The servicing frequency guide explains why an annual check-up does most of the heavy lifting that cover plans claim credit for.

If your boiler is under five years old and still under manufacturer warranty, a cover plan is largely paying twice for the same protection. Worcester Bosch, Vaillant, Ideal and Baxi all offer warranties of up to 10 or 12 years on new installs when registered and serviced correctly, something confirmed on Worcester Bosch's own site.

When cover plans make more sense

There are situations where a plan genuinely earns its keep:

• Your boiler is 6 to 12 years old, out of warranty, but not yet due for replacement
• You've had a breakdown before and know parts availability is patchy for your model
• You'd rather budget a fixed monthly amount than face an unexpected bill
• You're not confident judging engineer quality and want a guaranteed callout network

If none of those apply, you may be better off self-insuring: put the monthly premium into a savings pot and use it if something goes wrong. Most years, nothing does.

Old boiler versus cover plan versus replacement

The maths changes completely once a boiler starts showing its age. If you're seeing recurring pressure loss, banging noises, or other signs you need a new boiler, a cover plan is a sticking plaster on something that needs replacing. The Energy Saving Trust notes that older, inefficient boilers can cost considerably more to run than a modern condensing model, so the running cost saving alone can offset a chunk of a new install.

A new combi typically costs between £1,800 and £3,500 fitted, detailed in our new boiler cost guide, and can be spread with boiler finance. National providers often quote £3,000 or more for a straightforward swap, so it's worth comparing fixed prices rather than assuming cover is cheaper than replacing.

Getting the balance right

Always use a Gas Safe registered engineer, whether for a service, a repair, or a full install. You can check any engineer's registration on the Gas Safe Register. For most households, an annual service plus a savings buffer beats a cover plan on cost. For an ageing boiler that's not quite ready for the scrap heap, a short-term plan can smooth out the risk while you plan a replacement.

If your boiler is on its last legs, don't keep feeding it monthly premiums. Get a fixed price on a new install and see how the numbers actually compare, or book a service to find out where your current boiler really stands.