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Boiler Warranty: The Best 10-Year Warranty Boiler Models in 2023

Are you looking for a new boiler that will last a long time without expensive repairs? You’re in the right place — in the guide below, we’ll shortlist the best boilers with a 10-year warranty in 2024.

We’ll also explain what to look out for when reading warranty terms and answer some common questions about boiler warranties.

10-year warranty boiler

Why Do I Need a 10-Year Warranty Boiler?

The price difference between a boiler warranty of 10 years and one of 2 years isn’t much. In fact, you’d expect a typical, 24kW, 10-year warranty boiler to cost only £200 more than its 2-year counterpart. Essentially, you’re paying £25 for each added year of warranty. In our opinion, that’s an absolute bargain, given that the overall purchase could be in the thousands.

Keep in mind, any price difference that comes with a longer guarantee will relate to the cost of the boiler itself; the cost of labour for the installation will be the same.

So, a typical installation in an average home (24kW-30kW unit) is going to cost around £2,000. It’s hardly worth saving £200 on a low-warranty boiler when you then risk having to foot the bill for a new £2,000+ installation just a few years down the line.

What’s the Minimum Recommended Boiler Warranty?

A boiler warranty of 5 years is what we’d recommend as a minimum.

If a boiler manufacturer is offering a 5-10+ year warranty, it suggests they’re confident their products have longevity.

A boiler guarantee of 2 years? Not so much…

So, if you have the budget to stretch to a boiler with a 10-year manufacturer warranty, we’d highly urge you to do so.

10-Year Warranty Boiler Models

Based on our extensive market research, the models below deliver the best boiler warranties.

#1. Worcester Bosch Greestar 4000: 10-Year Worcester Guarantee

You’ll find various installers offering warranties of 5-10 years on Worcester Bosch boilers. Not only is this extremely competitive, but it also shows the confidence Worcester Bosch has in the quality of their products.

But how do you get the 10-year Worcester warranty? We suggest heading over to Heatable — one of the most reliable online boiler installation companies in the UK.

Worcester Bosch Greenstar 4000

They offer excellent rates on Worcester Bosch boilers from the Greenstar boiler range, but their offers also come with a long warranty. At the time of writing, all Worcester boilers listed on Heatable’s website come with a 10-year warranty.

You can get a price for your new boiler on screen inclusive of that warranty by clicking here. Simply fill in the form and in less than 90 seconds you’ll be seeing all their offers.

#2. Viessmann Vitodens 100-W: 10-Year Boiler Warranty

Viessmann is another strong name in boiler manufacturing. The German company is one of the biggest players in the European market, not only because they sell a lot of boilers every year, but because they build them to last. And that’s something most installers will tell you.


Viessmann boilers, like the Viessmann Vitodens 100-W (a popular Which? Best Buy combi boiler), come with a 10-year warranty if you buy it from Heatable.

All you need to do is fill out a few details about your home, and the Heatable calculator will give you a range of suitable boiler models.

#3. Other Models With a 10-Year Boiler Warranty

If you’d prefer a boiler that’s not from Worcester Bosch or Viessmann, or have a local installer that prefers to fit alternative boiler brands, here are a few more boiler models worth looking at:

  • Baxi 600, the Baxi duo-tec, the Baxi EcoBlue range or the Baxi Platinum
  • Ideal Vogue and Ideal Vogue Max
  • Vaillant EcoTec Exclusive, EcoTec Plus and Green iQ*

You can get quotes for your new boiler from local installers here.

*The Vaillant boilers mentioned above need to be fitted by an “Advance” installer, and installed alongside a Boiler Protection kit to make the warranty valid.

FAQs About Boilers With a 10 Year Warranty 

As we wrap up here, we’ll do our best to answer the most common queries about boilers with 10-year warranties.

Which boilers have a 10-year warranty?

Worcester Bosch, Viessmann, Ideal, Vaillant, Alpha, ATAG, and Baxi all offer the best boiler warranty terms in the industry, ranging up to 10 years and up.

Keep in mind, though — to get the longest warranty possible, you’ll typically have to get your boiler installed by the manufacturer’s accredited installer rather than just any Gas Safe registered engineer.

That said, Heatable offer 10-year warranty terms on all the boilers they fit — you can check their prices here.

How efficient is a 10-year-old boiler?

You can expect a 10-year-old boiler to be about 85% efficient, assuming that it’s a condensing model. This means that for every pound you spend on gas, 15p gets wasted; this isn’t bad compared to older, 60% efficient non-condensing boilers, but far behind the newest models with an energy efficiency of 95%+

Which gas boiler has the longest warranty?

ATAG boilers offer the longest warranty terms out there, stretching up to 14 years. To get this long of a warranty, your boiler package will need to include a ONEZone smart contoller, ATAG water treatment pack, and an Adey Atom filter.

However, ATAG aren’t the only ones providing a warranty that exceeds 10 years. Viessmann, Alpha, and Worcester offer warranty periods of 11, 12, and 13 years on select models.

How long are boilers usually guaranteed for?

Boiler warranty terms typically range between 2 and 10 years. That said, some manufacturers cover their boilers for longer periods — even as long as 14 years.

Is a 10-year warranty good?

Yes, a warranty that covers a boiler for 10 years is certainly good.

We’d say that the minimum term you should consider is 5 years, and never settle for any warranty that’s shorter. Warranty terms say a lot about the brand’s confidence in their product, so short, 2-year warranties really mean that the manufacturer expects their boiler to start malfunctioning after 2 years.

Typically, getting a boiler with a longer warranty will only set you back an additional £200-£300, which is a small price to pay considering boiler replacement costs +£2,000.

How long is a warranty on a new boiler?

It depends — some boilers are covered with pitiful, 2-year warranties, whilst others give you a generous 10 years of coverage (or even more).

On average, most boiler brands will offer 5 years and extend it to 10 if you meet certain conditions.

It’s important to note that some brands, like Worcester Bosch, actually guarantee their boilers instead of issuing a warranty. With Worcester’s guarantee, the entire boiler is completely covered and you never have to pay any call out fees as long as you service your boiler annually.

How long is the warranty on a Vaillant boiler?

Vaillant warranties range between 2 and 10 years. You can get the longer, 10-year coverage when you get the appliance fitted by Vaillant’s advance installers instead of local heating engineers.

How long is an Ideal boiler warranty?

It depends on the Ideal Boilers model. For example, the Logic Plus combi comes with a 7-year coverage on the appliance and a 10-year heat exchanger warranty.

Meanwhile, the warranty period for Logic Max and Vogue Max combi boilers is 10 and 12 years, respectively.

Does boiler warranty cover parts and labour?

Yes, most manufacturers’ warranties will cover parts and labour. However, it’s vital to pay close attention to the warranty terms when you purchase your appliance; this way, you’ll know what’s covered and what isn’t.

Do you need to service a boiler every year for warranty?

Typically, yes. If you’re installing a brand new boiler, chances are that its warranty coverage has certain conditions, and most times, these include annual servicing by a Gas Safe engineer.

Additionally, some manufacturers will requrie that you also fit magnetic and limescale filters for the warranty to be valid.

Do you need boiler cover if boiler is under warranty?

If you’ve got a brand new boiler under standard warranty, you shouldn’t need to get cover. If you’ve got the best warranty terms (like those you’d get from Worcester), you can expect the manufacturer to handle all labour costs associated with repairs and replacement.

However, if your warranty coverage is short, or your boiler is nearing the end of coverage, it’s a good idea to find a fitting boiler cover plan.

What’s Next?

Thanks for reading our guide to the best boilers with a 10-year warranty.

Still got questions about choosing a boiler for your central heating system?

Jump over to our boiler installation cost guide.

Or, drop us a line via our contact form, and we’ll get back to you as soon as possible.

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