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Vaillant Boilers – Prices & Benefits

Vaillant Logo Vaillant are one of the leading manufacturers of high efficiency boilers in the market. They have shown themselves to be one of the experts when it comes to designing, developing and producing energy-efficient, resilient and user-friendly units. They are dedicated to creating a range of boilers that benefit the consumer in a range of ways, from lowering their energy bills to offering them a flexible and hassle-free service. A German manufacturer, they have a ‘thinking ahead’ approach in all their product design.

The brand boasts a large network of accredited installers and service agents to provide backup and advice when needed and spare parts are also widely available. Vaillant produce a wide variety of products from domestic boiler and renewable solar thermal systems to commercial boilers.

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Vaillant Product Range

  • Gas Combi, System and Heat Only Boilers
  • Solar Domestic Hot Water Systems
  • Domestic Ground Source Heat Pumps
  • Air to Water Heat Pumps
  • Cylinders
  • Heating controls

You can find a more detailed list of products in our guide to Vaillant efficiency ratings.

Popular Combi Condensing Boilers

A Combi boiler will produce hot water for both your radiators and taps on demand from one unit. This means you don’t need a feed and expansion tank in the loft or a hot water cylinder in the airing cupboard. Vaillant manufacture a range of Combi boilers including the ecoTEC plus, the ecoTEC Pro and the ecoFIT pure. Several boilers from Vaillant feature ultra-quiet operation, low emissions and both top and rear flue options for flexible siting.

Model ecoTEC Plus 38kW ecoTEC Pro 28kW ecoFIT Pure 25kW
LPG Compatible Yes Yes No
Maximum DHW flow (l/min) Up to 20 11.1 10.4
ErP Efficiency Rating A (89.3%) A (89.3%) A (89%)
Dimensions (mm) 440 x 720 x 338 720 x 440 x 338 700 x 390 x 295
Other Available Outputs 25, 32, 35kW 24 or 30kW 30 or 34kW

Popular System Condensing Boilers

A System boiler will produce hot water for your heating system but requires a hot water cylinder to supply your taps. It’s often a popular solution for homes with more than one bathroom or a high demand for hot water. Vaillant offer the ecoFIT pure and ecoTEC plus System boiler in a range of outputs.

Model ecoTEC Plus 18kW ecoTEC 46kW High Output ecoFIT Pure 30kW
LPG Compatible Yes Yes – with conversion kit No
ErP Efficiency Rating A (89.3%) A (95.8%) A (89%)
Dimensions (mm) 720 x 440 x 338 800 x 480 x 450 700 x 390 x 295
Other Available Outputs 12, 15, 24, 30 or 37kW 65kW 25 or 35kW

Popular Open Vent Condensing Boilers

Vaillant offer several open vent or regular boilers which are perfect for replacing boilers in older, more traditional heating systems with a feed tank and storage cylinder. Their models offer a far more energy efficient replacement to old non-condensing models. The ranges include the ecoTec plus and the ecoFIT pure

Model ecoTEC Plus 28kW ecoFIT Pure 25kW
LPG Compatible No No
ErP Efficiency Rating A (89.2%) A (89%)
Dimensions (mm) 600 x 375 x 340 600 x 375 x 295
Other Available Outputs 12, 15, 18, 30, 38kW 12, 15, 18, 30, 35kW

Popular Discontinued Boilers

Below you can find more information about some of Vaillant’s most popular discontinued models (ideal if you want to compare your current boiler to their new offerings).

Vaillant Ecotec Plus 824 Gas Vaillant Turbomax VUW 242 EH Gas
Vaillant Turbomax Plus 824E Gas Vaillant Turbomax Plus 828E Gas
Vaillant Ecomax 828/2E Gas Vaillant Ecomax 824/2E Gas
Vaillant Turbomax VUW 282 EH Gas Vaillant Ecomax 835/2E Gas
Vaillant Ecomax 824 E Gas Vaillant Thermocompact VU 282 EH Gas
Vaillant ecoTEC VU GB 466/4-5 Gas Vaillant Combicompact vcw242eh Gas
Vaillant ecoTEC VU GB 656/4-5-H Gas Vaillant Ecomax 828 E Gas
Vaillant Thermocompact 628E Gas Vaillant Turbomax Plus 837 E Gas
Vaillant Turbomax Pro 28E Gas Vaillant Thermocompact VU 142 EH Gas
Vaillant Ecomax pro 28 E Gas Vaillant Ecomax pro 18 E Gas
Vaillant Ecomax 824/1E Gas Vaillant Thermocompact VU 182 EH Gas
Vaillant Ecomax 622/2E Gas Vaillant Ecomax 635E Gas
Vaillant Aquaplus Gas Vaillant Ecomax VU 226 EH Gas
Vaillant Thermocompact VU 242 EH Gas Vaillant ecoTEC plus 637 VU GB 376/5-5 Gas
Vaillant Turbomax Pro 24E Gas Vaillant Ecotec Plus 624 Gas

Vaillant Heating Controls

  • Simple, analogue in room thermostats e.g. VRT 15
  • Digital programmer with two channel timer e.g. timeSWITCH 160
  • Wired or wireless weather compensating thermostats e.g. VRC 700 / VRC 700f
  • Wireless vSMART™ intelligent room control with Smart phone app including self-learning and weather compensation.

Vaillant Boiler Prices

Vaillant are a brand of high quality and this is reflected in the price tag. Generally, a Vaillant boiler will cost between £800 – £1,400. For the most powerful boilers which are suitable for large homes or commercial properties this can rise to as much as £3,500.


Every boiler from Vaillant includes a minimum of 2 years as a guarantee with many offering up to 5 years. In some cases it is possible to extend the free guarantee to 7 years when the boiler has been fitted by a Vaillant Advance installer or to purchase a 10 year guarantee.

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Why Choose Vaillant?

Vaillant condensing boilers retain as much energy as possible by extracting the latent heat from exhaust fumes as a secondary energy source. This leads to reduced energy loss and an A rating under SEDBUK (Seasonal Efficiency of Domestic Boilers in the United Kingdom) guidelines. This energy-saving engineering is environmentally friendly as it reduces the levels of harmful gases emitted.

Vaillant offer various combination boilers, system boiler and open-vent boilers. Between them, this impressive range of boilers can cater to the majority of homes of any size and type from one bedroom apartments to households with more than three bathrooms. Their products are all extensively tested to ensure resilience and reliability and their designs are intelligently crafted so that all the boilers are as easy to install, operate and maintain as possible. Several of the boilers have been awarded the Quiet Mark accreditation in recognition of their quiet operating noise.

Efficiency plays an important role in any boiler. Vaillant claim that replacing a boiler which was installed prior to 2003 with one of their A rated models could reduce your central heating bills by a third and cut your home’s CO2 emissions by 800 kilograms a year.

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