Vaillant Boiler Prices 2025

Vaillant sell nearly 2 million boilers a year around the world and have about 15% market share in the UK.

The company has had a few firsts when it comes to boilers:

• in 1894 they patented the closed system gas powered bathroom boiler

• then in 1905 they launched the first wall mounted gas water heater

• then in 1924 they introduced the first central heating boiler

And they haven't stopped innovating ever since. All their modern boilers are famous for being reliable and having a strong environmental focus.

Vaillant prices by boiler type

The cost of a Vaillant boiler is dependent on the type of boiler that suits your requirements. Vaillant produce 7 different types of boilers and each are priced differently. We've collated all you need to know to check which is right for you and also what it will cost in this article.

Vaillant manufacture:

• Combi boilers

• System boilers

• Conventional (regular or heat only) boilers

• Gas boilers

• LPG boilers

• Condensing boilers

• Compact boilers

continue reading to uderstand the differences in pricing and use the handy quick links to jump to the relevant section.

Vaillant combi boilers cost from £1,000 to £2,400 for the boiler supply and between £2,500 and £6,000 fully installed.

• The boiler supply cost depends on which range of boiler you select and the power output needed.

• Vaillant are a premium brand of boiler but within their range they have more value focussed combi boilers such as the ecoTEC pro and high end models, which have longer guarantees, more expensive components and more advanced technology.

• Vaillant combi boilers range from 24kW (smaller properties) to 43kW (larger properties). More powerful boilers cost more than less powerful boilers.

• Combi boilers from Vaillant come with a 7 or 10 year gurantee

Combi boilers are both space saving and convenient; they produce hot water on demand and therefore don't require any hot (or cold) water storage tanks. They are the most popular type of boiler in the UK.

There are 4 Vaillant boiler ranges that currently have combi boiler models. And they produce 18 different combi boiler models:

• ecoTEC Plus
• ecoTEC Exclusive
• ecoTEC Pro
• ecoFIT Pure

A System boiler from Vaillant will cost between £1,000 and £1,750 for the boiler itself and with full installation will cost from £2,500 to £6,000, depending on the complexity of the job.

• The cost of the Vaillant system boiler largely depends on the range of boiler chosen and the power output required to heat the property.

• Vaillant supply system boilers from 10kW right up to 30kW with the cost increasing as the output goes up.

• The ecoFIT pure system boilers are Vaillant's value range whilst the more premium ecoTEC plus system range has their most expensive unit.

• Value Vaillant system boilers come with a 7 year guarnatee whereas more premium lines have a 10 year guarantee.

System boilers are fed by the mains water and utilise a hot water tank to store the water ready to feed showers, baths and taps on demand. Designed for higher heating and hot water usage properties they enable multiple showers to run at once and not drop water pressure. The downside is the extra space required within the property for the hot water cylinder.

Vaillant produce 3 ranges with system boiler options, and there are 17 different system boiler models to choose from in the range:

• ecoTEC Plus
• ecoTEC Exclusive
• ecoFIT Pure

Vaillant conventional boilers cost from £950 to £1,900 (boiler supply only) and fully installed from £2,450 to £6,000 depending on the type and complexity of the job.

• The cost of the Vaillant conventional boiler is determined by the range of conventional boiler chosen and how powerful the unit needs to be.

• Vaillant regular boilers range from 12kW right up to 35kW in output capacity with the price rising as the power of the boiler increases.

• The lower price conventional boiler range from Vaillant has a 7 year guarantee vs. the more premium with a 10 year guarantee.

Regular boilers (also referred to as heat only and conventional) need 3 parts: a boiler, a cold water tank and a hot water tank. Cold water is fed from the cold water tank (using gravity as the tank is normally in a loft or attic) into the boiler, which then heats it up and sends to the radiators and the hot water tank as required.

There are 2 Vaillant boiler ranges with conventional boiler options. And within those 2 ranges there are 17 conventional boiler models on offer:

• ecoTEC Plus
• ecoFIT Pure

Vaillant gas boilers cost from £950 to £2,400 for the boiler itself and then with full installation from £2,450 to £6,000, with the full price depending on the complexity and type of job undertaken.

• There are two main drivers for the range in the cost of the boiler only: the power of the boiler (measured in kW) and the range of boiler (value vs. premium)

• Vaillant gas boilers come in various power outputs ranging from 10kW to 43kW, with the price generally increasing as the boiler capacity increases.

• Vaillant value gas boiler ranges are cheaper than the premium ones, even for the same power output. The premium boilers have longer guarantees and higher grade components.

• Vaillant gas boilers come with either a 7 year or a 10 year guarantee.

Most boilers in the UK are gas powered and connected to the national gas network. The boiler ignites the gas to heat water which is then used for radiators, taps, showers and baths. Gas powered boilers can be combi, system or conventional.

Vaillant manufacture 37 different gas boiler models cross 4 boiler ranges:

• ecoTEC Plus
• ecoTEC Exclusive
• ecoTEC Pro
• ecoFIT Pure

An LPG boiler from Vaillant costs from £1,100 to £2,100 (supply only) and between £2,600 and £6,000 with full installation - subject to the complexity of the job.

• Vaillant produce LPG boilers ranging from 10kW up to 43kW. The cost of the LPG boiler typically goes up as the capacity grows.

• The LPG boiler from the Vaillant value range is cheaper than the equivalent LPG boiler from a Vaillant Premium range due to higher grade components and a longer guarantee.

• Vaillant LPG boilers are available with 7 and 10 year guarantees

LPG boilers are powered by Liquified Petroleum Gas (LPG), an option only considered when a home isn't connected to the mains gas network. They are generally exactly the same boiler as a gas boiler; most require an LPG conversion kit to run on the fuel. They are available as combi, system and regylar boilers.

There are 3 Vaillant boiler ranges that can be adapted to or already run on LPG, encompassing 18 different LPG compatible boiler models:

• ecoTEC Plus
• ecoTEC Exclusive
• ecoTEC Pro

Vaillant condensing boilers cost from £950 to £2,400 (supply only) and from £2,450 to £6,000 fully installed, with the final price depending on the specifics of the job including the old and new boiler type, the boiler installation location and any extras ordered or needed.

• All Vaillant boilers are condensing boilers and come in a varienty of power outputs from 10kW (one of the cheapest boilers Vaillant produce) to 43kW (one of the most expensive).

• Vaillant have premium and value ranges of condesning boilers, with the premium tending to have longer guarantees, more innovative technology and higher grade parts, and are priced accordingly.

• Vaillant offer 7 year or 10 year guarantees on their condensing boilers.

• All gas, LPG and oil boilers manufactered today are condensing boilers by law, as part of environmetal considerations to help lower emissions.

• The exhaust gasses from a boiler are hot and therefore removing heat generated by the boiler as waste, rather than heating water. A condensing boiler basically recovers a lot of this heat meaning the boiler is more efficient and needs to burn less fuel to gt the same result.

All of the 52 different boiler models currently produced by Vaillant across the 4 ranges of boilers are condensing boilers:

• ecoTEC Plus
• ecoTEC Exclusive
• ecoTEC Pro
• ecoFIT Pure

Vaillant compact boilers will cost from £950 to £1,750 for the boiler only and with full installation will cost between £2,450 to £5,000 with the overall cost determined by the complexity of the job and additional extras.

• The Vaillant compact boiler range is the ecoFIT pure and is available as a combi, a system and a conventional boiler.

• Vaillant compact boilers are available from 12kW to 35kW power output; the cost of the boiler increases with the capacity

• Vaillant offer a 10 year guarantee on their compact boilers which is built into the overall price you will pay.

Compact boilers are typically small enough to fit into a standard size kitchen cabinet and therefore slot seamlessly into a small to medium sized modern home. The can be combi, system or conventional boilers. Modern compact boilers can be as effective and effcient as boilers with larger casings so there shoould be no trade off with heating and hot water performcance.

Vaillant have 1 range of compact boilers within which there are currently 14 different models to choose from split by combi, system and regular:

• ecoFIT Pure

Vaillant boiler range prices

Vaillant currently  maufacture 4 core ranges of boilers each with different strengths, system types, fuel options and price tags. We now go on to review all of the Vaillant boiler ranges and each model within the ranges to guide you to the right boiler to match your requirements and budget.

ecoTEC plus prices

The Vaillant ecoTEC Plus costs between £1,000 to £2,400 for the boiler only and fully installed costs from £2,750 to £4,500.The final price will be determined by the job type, the sort of boiler being replaced and if the boiler is being installed in the same location.

• The big range in the boiler cost of an ecoTEC Plus boiler is driven by the capacity of the boiler and the type of boiler.

• The ecoTEC Plus is available as a combi, a system and a conventional boiler impacting the price.

• The more powerful the boiler the bigger the price and the ecoTEC Plus is available from 10kW up to 40kW, with the most powerful unit being £1,400 more than the least powerful.

ecoTEC plus boiler range

The ecoTEC plus boilers are a clever range full of intelligence and efficency. They are perfect for small, medium and large homes as Vaillant produce a big range of power outputs.

• The boilers are highly efficient at 94% and an ErP efficiency rating of A, so they burn less gas than other models to produce the same heat, meaning lower gas bills.

• The combi models can deliver hot water in about 5 seconds, which is very convenient in a busy household.

ecoTEC exclusive prices

A Vaillant ecoTEC Exclusive boiler costs from £1,700 to £2,100 (supply only) and fully fitted from £3,200 to £4,500. Prices based on like for like boiler replacement in the same location.

• Power output is the biggest influence on the boiler unit price of an ecoTEC Exclusive, the least powerful model is £400 cheaper than the top of the range.

ecoTEC exclusive boiler range

The ecoTEC Exclusive is the flagship boiler model from Vaillant and is available as a combi and a system boiler for larger homes..

• It was the first boiler range to have Vaillant's Green IQ technology which cleverly optimises boiler performance to help maximise efficiency and reduce your gas bill.

• The boiler can adapt to heating demands through modulation (1:10) and reduce the power output when demand form the household is low to keep gas usage down, saving money.

• It has a clever Extra-Condense heat exchanger to minimise wasted heat and increase efficiency.

• Comes in-built with remote diagnostics, helping to easily maintain optimum performance.

• Highly environmentally friendly with 85% of the boiler compatible for recyling at the end of it's life.

• Available as a 35kW and 43kW combi boiler and as a 27kW system boiler.

ecoTEC pro prices

An ecoTEC Pro boiler costs between £1,000 and £1,300 (supply only) and between £2,500 and £3,500 with full installation, based on a like for like replacement. Any complications to the job will cost extra.

• The power output of the ecoTEC pro affects the price with the most powerful boiler being £200 more than the least.

• Fuel type also affects the boiler price with LPG versions being about £100 more due to the converison kit.

ecoTEC pro boiler range

The ecoTEC pro is a very efficient range of combi boilers from Vaillant that are perfect for small to medium sized homes.

• The boiler is built with modern living in mind and is designed to be space saving. The unit will fit easily in a standard kitchen cupboard to seamlessly fit inside your home and as a combi boiler there is no need for a cumbersome hot water tank.

• There are three power outputs available: 24kW, 28kW and 30kW to cope with different hot ater and heating demands.

• It comes with the clever AquaComfort system as standard, which reduces water wastage by quickly supplying hot water at a constant temperature.

• And has been awarded the Quiet Mark for the very low noise generation from the boiler, making it easy to live with installed in rooms frequently used.

ecoFIT pure prices

An ecoFIT Pure boiler on its own costs between £950 and £1,750 rising to £2,450 to £4,500 including full installation. The price being based on a like for like replacement in the same location.

• The price of the ecoFIT Pure is determined by the power output of the boiler with the range starting at 12kW and rising to 35kW with the price rising accordingly.

ecoFIT pure boiler range

The ecoFIT Pure is Vaillant's compact range of boilers designed to fit in standard kitchen cupboards. They are availble as combi, system and conventional boilers and are perfect to heat small, medium and large homes due to the wide range of power outputs.

• Available from 12kW right up to 35kW to suit all but the very largest homes.

• Very high efficiency (94% ErP A rating) means lower energy bills

• Awarded the Quiet Mark for the low operating volumes so no problem if installed in a kitchen

Summary on Vaillant Boiler Prices

So there you have it, all you need to know about the different types of boilers Vaillant manufacture and their cost, plus all the Vaillant boiler ranges and the cost and spec of each individual model.

All that's left is for you to get compare Vaillant Boiler Prices