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A new Vaillant boiler installed quickly

As one of Europe’s leading heating technology manufacturers, Vaillant have been setting heating standards for over 140 years

Get a fixed price quoteSee our full Vaillant range

A new Vaillant boiler installed quickly

As one of Europe’s leading heating technology manufacturers, Vaillant have been setting heating standards for over 140 years

Get a fixed price quoteSee our full Vaillant range

Vaillant are one of the longest-serving domestic heating manufacturers around, so we’ve had a lot of time to get used to their systems. Our expert engineers are well-versed in the components and model types produced by Vaillant and would be happy to advise you on choosing the best heating system, as well as maintaining, repairing and installing their products.

Vaillant products feature high energy efficiency ratings and low emissions and have an excellent reputation for performance, quality and reliability.

What is the most popular Vaillant boiler?

Vaillant Ecotec Pro 30

From only



NO deposit from


Per month 6.9% APR Representative*

Get a fixed price quote

Your boiler package includes

  • 30kw Vaillant combi boiler
  • 10 Year warranty
  • Highly efficient and economical to run
  • Quiet Mark accreditation and Which? Best Buy accredited
  • Free Honeywell Lyric T6 Web Enabled Smart Thermostat worth £199 RRP
*Representative Example  
Item value (Cash price) £2,242
Deposit £0
Total amount of credit £2,242
Agreement duration 120 months
Annual rate of interest 6.9% P.A
Representative APR 6.9% APR
120 monthly payments £25.68
Total amount payable £3,081.10

Who can apply for finance

  • Applicant must be 18 years or older on application date
  • In permanent UK residence for a minimum of 3 years

Fulfil one of the following employment criteria:

  • In regular, permanent employment (for a minimum of 16 hours a week)
  • Retired from regular employment
    Not working through disability
  • Self employed

The approval of your application depends on your financial circumstances and borrowing history.

What is the warranty for a Vaillant boiler?

All of our Vaillant systems come with an amazing 10-year warranty.

We guarantee a FULL manufacturer-backed warranty which will cover you for all repairs, labour, call-outs, and parts.

System types

Vaillant manufactures a range of heating systems such as a combi, regular and system. While Vaillant combi boilers are ideal for smaller homes, system boilers can cope with higher demands. while regular boilers are most common in older properties.

Our Vaillant range comprises of the following:

  • Vaillant Ecotec Pro 30 combi
  • Vaillant Ecotec Plus 835 combi
  • Vaillant Ecotec Plus 418 regular
  • Vaillant Ecotec Plus 424 regular
Vaillant Ecotec Pro 30 affordable combi boiler

Ecotec Pro 30

The ecoTEC Pro range of Vaillant combi boiler combine the built-in quality, reliability and performance you’d expect from Vaillant, with a simple design and approach. This highly efficient system has been awarded the Quiet Mark Accreditation and with us, you'll get a free 10-year warranty on all parts, labour and call-outs.

  • Hot water flow rate: 12.3
  • Central heating output: 30kW
  • Warranty duration: 10 years
  • Dimensions: 720 x 440 x 338
Vaillant Ecotec Plus 835  affordable combi boiler

Ecotec Plus 835

The Vaillant ecoTEC plus range of high-efficiency heating systems combine fantastic efficiency levels and high performance with great usability. Thanks to continuous modulation and real combustion control by a multi-sensor system, they achieve high efficiency at the lowest emissions.

  • Hot water flow rate: 14.3
  • Central heating output: 35kW
  • Warranty duration: 10 years
  • Dimensions: 720 x 440 x 372
 Vaillant Ecotec Plus 418 & 424  affordable heat only regular boiler

Ecotec Plus 418 & 424

Extremely reliable and displaying all the in-built quality you’ve come to expect from Vaillant, the ecoTEC plus is clearly one of the best open vent solutions available today – Where homes utilise a traditional open-vented system to provide their heating and hot water, the ecoTEC plus open vent system is the ideal way to deliver exceptional energy-efficient performance.

  • Central heating output: 18 - 24kW
  • Warranty duration: 10 years
  • Dimensions: 602 x 375 x 320

Common problems

Sometimes your central heating will have issues, we all have our off days. So, we’re here to tell you a list of common problems that you can fix at home or can be sorted by one of our gas safe engineers quickly.

  • F22 fault – common in Ecotec Plus and Ecotec Pro models, this is caused by a lack of pressure or water, putting the system into a limp mode. Prolonged firing could damage the interior parts.
  • F27 fault – this is when the sensor has detected that the flame is not correct. This could be due to a faulty PCB, gas valve or flame sensor.
  • F28/F29 fault – one of these codes will display following a lockout, or no heating/hot water. It is caused by a lack of gas supply.
  • F75 fault – this is displayed when the water pressure sensor or pump is defective, causing low pressure. This can be caused by the central heating pump, pressure sensor, or both.

Check out our Vaillant fault code guide if you have any error fault codes that weren't listed above.

Vaillant affordable repair combi heat only combi boiler


A Gas Safe Registered engineer must be called to deal with all problems relating to gas. F27 faults will need a replacement component or a new central heating system installed in the case of a faulty PCB. F75 faults may need an upgrade to a newer, Grundfos pump, which our local engineers carry on board.

Cosy up with a better boiler company

We exist to be completely transparent – no bull, no waffle, no confusion.

ˆOnline purchase discount - Applies to direct new customers only available on installations booked from 1/07/21. The £100 purchase discount will be added at the point of online purchase. The promotion is non-transferable and cannot be used in conjunction with any other offer.