Your boiler warranty has expired: what happens next

What you actually lose when the warranty runs out

A manufacturer's warranty is a promise to fix or replace parts that fail because of a manufacturing fault, at no cost to you. Worcester Bosch say they will, at their sole discretion and free of material and labour charges, repair or replace components of the product that are faulty or defective in material or manufacture. Ideal's wording is much the same, covering a mechanical or electrical breakdown caused by defective workmanship or materials.

On the day that period ends, the promise stops and nothing else changes. The boiler is not less safe and no rule says it has to be replaced. You have simply moved from someone else paying for a failed part to you paying for it. Ideal make the switch explicit: their terms reserve the right to charge a call-out fee where the boiler is outside the warranty period or its conditions have not been met.

People also over-estimate what they have just lost. Vaillant state that the guarantee applies only to boiler component failures, not to central heating components outside the boiler such as room thermostats, time controls and motorised valves. Ideal exclude defects caused by the design, installation and maintenance of the system. A leaking radiator valve or a sludged-up system was your bill already.

The short version

If you read one part of this page, read this.

• An expired warranty is a money problem, not a safety problem.
• Check the dates first. Worcester Bosch may date the guarantee from installation or from six months after manufacture, so the clock can have started earlier than you think.
• It may have lapsed sooner. Ideal say the warranty lapses if the boiler is not serviced by a Gas Safe registered engineer at the end of each 12 month period.
• Your legal rights do not expire with it. GOV.UK states that a customer has the same right to free repairs or a replacement whether or not they have a warranty or guarantee.
• Keep servicing it. HSE advises annual servicing by a Gas Safe registered engineer, quoted in full below.
• If you smell gas, stop and call the National Gas Emergency Service on 0800 111 999.

First, check it really has expired

Plenty of households think theirs has run out when it has not, and plenty think they have seven years left when it lapsed at year two. Three things decide it.

The start date, and read the whole rule rather than half of it. Worcester Bosch state that the guarantee period commences from the date of installation, provided the product is installed within six months of its date of manufacture, and that otherwise the guarantee period commences six months after the date of manufacture (clause 3.3). A boiler that sat in a merchant's warehouse for a year was already part-way through its guarantee on the day it went in.

Whether it was registered. Vaillant require registration within 30 days of installing the appliance, and say failure to do so reverts the guarantee to 12 months from date of installation. Ideal say the same. A ten-year guarantee that was never registered was a one-year guarantee all along.

Whether it was serviced every year. This is the condition that catches most people. Ideal require a service by a Gas Safe registered engineer at the end of each 12 month period, and say the warranty lapses if that is not done. Worcester Bosch require an annual service by a competent and officially certified engineer, recorded in the service record, and warn that failure to adhere may result, at their discretion, in the guarantee being reduced, limited or invalidated. That cost was never inside the guarantee, so it was always yours to pay.

To check where you stand you need the serial number from the data plate and, ideally, the Benchmark commissioning sheet. Our guide to checking a boiler warranty covers both.

Your four options once the warranty ends

The rights that carry on after the warranty stops

A manufacturer's warranty sits on top of your legal rights, it does not replace them. Worcester Bosch say the guarantee is in addition to, and does not substitute, exclude nor limit any statutory rights you have against them, the seller or the installer.

GOV.UK spells out what that means against the trader who sold you the goods: a customer has the same right to free repairs or a replacement regardless of whether they have a warranty or guarantee or not, so a trader may still have to repair or replace an item if the guarantee has run out. GOV.UK allows up to 6 years to bring that, or 5 years in Scotland. The right runs against whoever sold you the boiler, usually the installer, and after 6 months a trader can ask you to prove the item was faulty when you bought it. It is a route for a genuine manufacturing or installation defect, not for ordinary wear on a boiler that has done ten winters.

If you bought the house rather than the boiler, the guarantee is a separate question with its own page. Worcester Bosch clause 3.5 ties the guarantee to whoever owns the product, and after completion that is you. Clause 6.1 governs the paperwork: rights or obligations pass to another person only with their prior written consent, which they will not unreasonably withhold or delay. Our page on transferring a boiler warranty to a new owner sets out what to ask for.

Keep servicing it, warranty or no warranty

The annual service is easy to drop once there is no warranty to protect. That is the wrong conclusion. HSE strongly advises that all gas appliances, flues and pipework should be installed, regularly maintained and serviced at least annually by a Gas Safe registered engineer, and that anyone employed to work on gas appliances in domestic premises must be a Gas Safe registered engineer and competent in that area of gas work.

If you let the property out it is a duty rather than advice: HSE requires an annual gas safety check by a Gas Safe registered engineer, the record kept for 2 years and a copy issued to each tenant within 28 days.

One point sits above all of this. If you ever smell gas, do not touch electrical switches, do not smoke, put out naked flames, open the doors and windows, and contact the National Gas Emergency Service immediately on 0800 111 999. HSE also says to shut off the gas at the meter control valve if you know where it is.

Where a cover plan fits

A cover plan is the option most people weigh on the day a warranty ends, so here is ours plainly. Smart Plan is a service plan rather than insurance, from UK Boiler Company Ltd, which has traded since 2014. You pick the modules you want, and boiler and central heating is one. Inside a 12-month cover period it funds parts and labour up to £500 where the boiler is under 7 years old, or up to £200 where it is over 7, and any cost above your limit stays with you.

Two limits matter more than that headline number on a boiler just out of warranty. Our terms declare the equipment beyond economic repair if the heat exchanger or the PCB fails, so the plan pays a contribution towards replacing it, the lower of retail value including installation or your cover limit less work already carried out, rather than funding that repair (cover plan T&Cs p.8 §2.1(c) and p.23 §9.5). Work caused by sludge, scale or corrosion is excluded too, worth weighing on a system that has run unserviced. And a plan picks up the breakdown after it starts, so a fault the boiler shows now is pre-existing: that one is a one-off repair, Monday to Friday, 09:00 to 17:00.

The small print. Your first 30 days carry a £95 call-out fee paid in advance, which also applies to faults outside the plan, no-access visits and an early annual service; cover is live from day one. Call-outs are booked Monday to Friday, 08:00 to 18:00, and inside those hours we aim to get an engineer out to you within two working days, through a national network of thousands of Gas Safe registered engineers. Cooling off runs 14 days and ends as soon as a service is performed, after which a 12-month agreement period runs and leaving early costs the remaining months or 75% of the outstanding balance. Read our page on whether boiler cover is worth it, or tell us about your boiler and we will come back to you.

Boiler warranty expired: FAQs

Out of warranty and want the next repair handled?

Pick the modules you want and leave the rest. Boiler and central heating funds parts and labour to £500 in a 12-month cover period where the boiler is under 7 years old, or £200 where it is over 7. Where the heat exchanger or the PCB fails, our terms declare the equipment beyond economic repair and pay a contribution towards replacing it rather than funding that repair (cover plan T&Cs p.8 §2.1(c) and p.23 §9.5). A plan starts from the next breakdown, so today's fault is a one-off repair, Monday to Friday, 09:00 to 17:00. Your first 30 days carry a £95 call-out fee paid in advance, which also applies to faults outside the plan, no-access visits and an early annual service; cover is live from day one. Cover-plan call-outs are booked Monday to Friday, 08:00 to 18:00. A service plan, not insurance.

Helpful links

• How to check your boiler warranty
• Transfer a boiler warranty to a new owner
• Is boiler cover worth it? The honest maths
• Boiler repair or replace?
• Tell us about your boiler
• Boiler & central heating cover
• Check an engineer on the Gas Safe Register
• HSE gas safety advice for home owners
• GOV.UK: accepting returns and giving refunds