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Vaillant Boilers Prices (2021 UPDATE) [Should You Buy a Worcester Instead?]

Welcome to our 10-minute guide to Vaillant boiler prices and what they cost to install.

If you’re looking for a new boiler, there’s a good chance you’re tossing up between a few brands. And, if you’re like the majority of UK homeowners, you’re trying to make a decision between Baxi, Glow-Worm, Potterton, Worcester Bosch and of course, Vaillant.

While working for a plumbing merchant, Vaillant and Ideal Boilers were similar in popularity, with Worcester Bosch being the clear leader.

Vaillant boilers prices

Get a Quote on Vaillant Boilers

Want to get a fixed price for a new boiler in screen in less than 2 minutes? Use this clickable form via Heatable. They’re an online comparison boiler installation company, so they can offer extremely competitive prices on Worcester boilers.

Vaillant Boiler Prices Range From £800 to £2,800 — Without Installation

Vaillant isn’t the cheapest boiler brand on the market. I’m sure you’ve seen other brands go for £500 or less — probably for a budget 24kw boiler brand, with a 2-year warranty at best. Well, none of the boiler prices below can compete with that, and there’s a reason for it. Much like Worcester Bosch, Vaillant is a premium boiler brand. They focus on efficiency (and therefore, energy savings), reliability, practicality and warranty. All those things come at a price.

The price range above includes combi, systems, and regular boilers of various capacities. We’ve got an ecoTEC Plus 12kW system boiler on the lower end, just shy of 800 quid; its mighty 64 kW counterpart at £2,800; and everything in between.

If you’re looking for the average 24kW combi — for which we’d recommend the ecoTEC Pro 24kW — you can find a new boiler for about £900 (remember: this excludes installation). 

Vaillant Boiler Prices Compared

To offer you a simple price comparison, we’ve drawn up this table below. Here, we’ve focused on combi and regular boilers since they’re the most common boiler types.

Boiler Cost
ecoFIT Pure Combi  (25kW – 35kW) £860 – £1,120
ecoTEC Pro Combi   (24kW – 30kW) £920 – £1,820
ecoFIT Pure Regular   (12kW – 35kW) £740 – £1,450
ecoTEC Plus Regular   (15kW – 38kW) £800 – £1,440

Unless your household has excessive water demand (think 3 showers running at once), your best pick should be one of the ecoTEC Pro Combi series. This Vaillant range comes with a 5-year warranty as standard, and we’d not recommend installing a boiler with any less than this.

Although the cost of a Vaillant boiler with a 5, 7 or 10-year warranty will be more (£150-300) than a lesser brand offering just 2 years, the longer coverage is worth the extra pound notes. That’s because if you have to replace your boiler 2-years down the line rather than after a decade, you’ll be out of pocket in a big way.

There’s the option to upgrade the Vaillant ecoTEC Plus to a 7 or 10-year warranty when using a Vaillant Advance Installer. That’s comparable to Worcester boilers, which come with a 10-year warranty.

What kind of fuel does your boiler use?

Grab your fixed price online by 3PM, and get next-day boiler installation.

Worcester boilers installed from as little as £1,795.

Vaillant Boiler Installation Costs

The cost of a Vaillant boiler itself is only a small piece of the puzzle. The majority of boiler installation costs are made up of labour and materials needed to facilitate the setup. As a rough guide, adding around £1,000 for materials and labour won’t steer you too far wrong. That will add up to TOTAL installation cost of around £2,100 for a Vaillant ecoTEC Plus 24kw.

That said, there are plenty of other factors that can cause the costs to fluctuate. For instance:

  • Is a magnetic system filter being fitted? This could add £150-250 to the cost of your new Vaillant boiler.
  • Does the boiler need to be moved to a new location? This could add £350-750 to your quote.
  • Is your flue installed horizontally or vertically? The latter variation typically costs more.
  • Where do you live in the UK? London tends to be the priciest, but costs do vary between the other 8 regions, too.

The list goes on.   That’s why we suggest you try using Heatable’s calculator to get a FIXED quote on a range of boilers suitable for your property. You don’t have to provide any personal details, and the whole thing takes less than 2 minutes.

How Vaillant Boiler Prices Compare To Worcester Bosch

As you can see from the chart below, you can get a Worcester Bosch boiler of an equivalent output to the Vaillant combi range for roughly the same price.

Boiler Cost
Greenstar 25I £950
Greenstar 30I £1,100
25SI Compact £1,100
30SI Compact £1,175
28CDI Compact £1,150
32CDI Compact £1,250
36CDI Compact £1,400
29CDI £1,200
34CDI £1,300
38CDI £1,400

Remember, these costs don’t include installation and still hinge on all the factors we discussed above. To get a more accurate comparison, you can get a fixed price online on Heatable for a Worcester and compare that with quotes from local installers on a Vaillant. Heatable is a national boiler installation company that installs the best boiler brands like Worcester Bosch, Viessmann, Ideal, and others. Because of their size, naturally, they get Worcester boilers well below what most installers can. And looking at the fixed prices online, that converts to installation prices around £200-300 cheaper than expected.

To get an example, we used Heatable’s calculator and plugged in some details to get a Worcester 30I — the most comparable alternative to Vaillant’s ecoTEC Pro Combi 30kW. Here’s the fixed quote we got (get yours in 90 seconds here):

HEATABLE Worcester Bosch Greenstar i 30kW

Vaillant Boiler Reviews

There’s no doubt that Vaillant is one of the leading boiler brands in the UK. But, as we do before buying any other product, checking out Vaillant reviews is always worthwhile.

Some of the most valuable reviews come from Expert Trades. And as you’ll see from their overall review rating of the Vaillant ecoTEC Plus, Expert Trades reviewers agree with our evaluation.

You can read all the reviews of the Vaillant ecoTEC Plus on Expert Trades here.

Another place that’s got a tonne of Vaillant reviews worth checking out is Trust Pilot. Vaillant currently has over 14,600 reviews on Trust Pilot, averaging 4.6 stars.

Vaillant boilers - Trustpilot reviews

You can read all the reviews for Vaillant on Trust Pilot here.

Upgrade Or Repair Your Boiler

If you’re on the fence about replacing your boiler, there are a few things to consider.

Boiler Efficiency Rating

The first is what efficiency rating your boiler is. Modern boilers are A-rated, typically being 89% efficient or more. For instance, the EcoTec Plus is 89.3% efficient.

The oldest boilers can be lower than 70% in terms of efficiency (source). With heating bills making up around 55% of utilities, that’s a lot of cash to be flushing down the drain.

Boiler Condition

Another thing to consider is the overall condition of your boiler. We’ve written a guide covering average boiler repair costs, and in general, they’re not cheap. If your boiler is deteriorating, it might be worth considering a replacement over a repair.

Typically, a replacement is going to be a good option if your boiler:

You can check prices for a boiler replacement here.

Anything less than this and a repair is likely to be the better option.

What’s Next?

Thanks for reading our 10-minute guide to Vaillant boiler prices and how installation costs compared to big-name brands like Worcester Bosch.

Still got questions?

Use our contact form and get in touch. Or read more boiler installation guides here.

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