Do you want to learn more about Vaillant boiler prices?

If you’re thinking about investing in a new Vaillant boiler, you probably already know the amazing quality and value they have to offer.

However, you may also be looking at prices online and scratching your head at all the different figures out there. Don’t worry though – there’s a very good reason that prices vary so much.

Having installed and serviced many Vaillant boilers over the years, I thought a blog post was the best idea to try and explain their prices to my customers.

But before we get started…

An introduction to Vaillant boilers

Vaillant are famous for being the original inventor of the combi boiler. For decades, they’ve been at the forefront of German heating and engineering, and their boilers stand the test of time. Not only that, they’ve also won an award for making the quietest boiler on the market!

I personally fit a lot of Vaillant boilers, as my customers love them. This is a premium brand that regularly produces fantastic products, and has its own dedicated service engineers.

They’ve also recently invested in Scotland by introducing a large, dedicated training centre.

However, it’s worth mentioning that Vaillant have recently scrapped their free extended warranties. Their boilers now come with 5 – 7 year guarantees, but you can pay around £150 to cover you for 10 years.

Vaillant boiler prices explained

Vaillant tend to be slightly on the more expensive side of the premium brand category.

Their closest rival is Worcester Bosch, and both of these brands have the Which Best Buy stamp of approval. However, Vaillant always seem to price themselves just above Worcester Bosch by about £50 on each model.

Let me give you an average pricing example, based on our most popular Vaillant combi boiler:

For a direct swap combi boiler, using the same flue hole, existing gas pipe and a condensate drain within 3m, you’re looking at prices from £2,450. This is based on a 24kw combi, flue kit, wireless programmable thermostat, magnetic filter and a 5-year guarantee.

So, just to highlight again, Vaillant will always be £50 more expensive than similar top premium brands across the board. However, if you also want a 10-year guarantee, you’ll also have to pay an extra £150.

Which factors can affect price?

Like anything, trying to predict the overall price you pay for a new Vaillant boiler is impossible without knowing more detail.

Your final Vaillant boiler costs will depend on:

  • If you need a combi, regular or system boiler
  • The specification of boiler you need to correctly heat your home
  • Whether or not you need a direct swap or have to move the boiler to a new location
  • If you need to upgrade your pipework or fit a new condensate
  • The type of smart controls or thermostat you choose

Not to mention things specifically related to your home, such as whether or not you’ll need to replace tiled or sealed flooring, and if you want new radiators with your installation.

Does that all sound like a bit too much to take in? The good news is, your chosen Gas Safe registered engineer should be able to advise you on most of the factors above.

Advice from an experienced engineer

I always recommend opting for the best boiler you can afford. Look out for reputable brands offering long guarantees, and really do your homework.

If you’re still feeling unsure, a reputable engineer should be able to help you decide on the best boiler for your home.

Finally, the best advice I can give you is to arrange two or three fixed price detailed quotations, so you know you’re not being overcharged for your new Vaillant boiler!


I hope this blog has been helpful when learning more about Vaillant boiler prices. I wish I could help you more, but the final price you pay will come down to a variety of factors, like the ones mentioned above.

Saying that, I *can* offer you more specific free help and advice! Just leave a comment below, or get in touch with me directly – I’d love to hear from you.