Compare All Vaillant Boilers Prices & Reviews 2021 | No.1 Boilers Guide

The boilers are one of the most important tools which make our life easier. The warm and cosy summer are very rare in UK. Yet, to feel some hotness, we can install boiler in our house. The boiler is a tool which helps in regulating hot water and providing heat to your home through radiators. There are mainly three types of boilers on the basis of the structure and the way these functions. One of the most- established company in the field of manufacturing boilers is Vaillant. Thisbrand has been setting standard in the field of heating industry for more than 140 years in UK.

Vaillant provides its users with a wide variety of boilers under different categories designed individually to suit every household according to the size of the family and the property. The output ranges from 12kW to 65kW with the price varying from £850 to £1,920.

NameOur RatingAvailablePriceOnline Rating
Vaillant Combi Boilers9.2/10Yes£ 925.00 – £ 1,916.884.6 out of 5 stars 12684 Global Rating
Vaillant System Boilers9.5/10Yes£ 822.68 – £ 2,799.154.6 out of 5 stars 12684 Global Rating
Vaillant Heat-Only Boilers9.4/10Yes£ 695.88 – £ 1,433.224.6 out of 5 stars 12684 Global Rating

Prices for different models of the Vaillant Combi Boilers:

  • VAILLANT ECOTEC PLUS 825
    • Type – Combi
    • Output – 25.4 kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 1,102.07
  • VAILLANT ECOTEC PLUS 832
    • Type – Combi
    • Output – 31.8 kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 1,185.65
  • VAILLANT ECOTEC PLUS 835
    • Type – Combi
    • Output – 35 kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 1,263.53
  • VAILLANT ECOTEC PLUS 838
    • Type – Combi
    • Output – 38.7 kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 1,395.00
  • VAILLANT ECOTEC PLUS 938
    • Type – Combi
    • Output – 38.7 kW
    • Dimension – H- 720MM, W- 440MM, D- 600MM
    • Price – £ 1,491.32
  • VAILLANT ECOTEC EXCULSIVE 35
    • Type – Combi
    • Output – 35 kW
    • Dimension – H- 720MM, W- 440MM, D- 474MM
    • Price – £ 1,425.60
  • VAILLANT ECOTEC EXCULSIVE 43
    • Type – Combi
    • Output – 43 kW
    • Dimension – H- 720MM, W- 440MM, D- 474MM
    • Price – £ 1,916.88
  • VAILLANT ECOTEC PRO COMBI 24
    • Type – Combi
    • Output – 24 kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 938.44
  • VAILLANT ECOTEC PRO COMBI 28
    • Type – Combi
    • Output – 28 kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 925.00
  • VAILLANT ECOTEC PRO COMBI 30
    • Type – Combi
    • Output – 30 kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 1,086.00
  • VAILLANT ECOFIT PURE COMBI 25
    • Type – Combi
    • Output – 25 kW
    • Dimension – H- 700MM, W- 390MM, D- 225MM
    • Price – £ 858.00
  • VAILLANT ECOFIT PURE COMBI 30
    • Type – Combi
    • Output – 30 kW
    • Dimension – H- 700MM, W- 390MM, D- 225MM
    • Price – £ 980.32
  • VAILLANT ECOFIT PURE COMBI 35
    • Type – Combi
    • Output – 35 kW
    • Dimension – H- 700MM, W- 390MM, D- 225MM
    • Price – £ 1,090.46
  • VAILLANT ECOTEC EXCLUSIVE WITH GREEN IQ 835
    • Type – Combi
    • Output – 35 kW
    • Dimension – H- 720MM, W- 440MM, D- 406MM
    • Price – £ 1,485.00
  • VAILLANT ECOTEC EXCLUSIVE WITH GREEN IQ 843
    • Type – Combi
    • Output – 43 kW
    • Dimension – H- 720MM, W- 440MM, D- 406MM
    • Price – £ 1,750.00

About the Vaillant Combi Boilers:

This type of boiler is especially designed for small houses where there is lack of space otherwise, you may have to install a tank for storage of hot water or loft for cold water. This occupies a lot of space which you may or may not have available in your house that’s why, the combi boilers are the best available for the users who don’t have space in their home. These boilers are also capable of meeting the high demand of hot water irrespective of the number of family members in the house. Valiant Combi boilers output range varies from 24kW to 40kW. It is equipped with high-spec heat exchanger, as well as an impressive 1:10 modulation range and special Green iQ mode to reduce gas consumption.

Advantages

  • Combi boilers manufactured by Vaillant are extremely quiet. These boilers are designed to produce as less functioning noise as possible.
  • This boiler has been known for its energy efficiency and capable of reducing the carbon footprint which makes it somewhat more eco-friendly than other boilers available in the market.
  • It is compatible with solar as well as gas for its energy source.
  • The compact design of this boiler ensures that it does not dominate your room and you can have your space.
  • These boilers do not force you to pay extra as the installation process is very easy.

Disadvantages

  • The combi boilers are not ideal for multiple bathrooms. You can get hot water from multiple taps.
  • These boilers will not be ideal for if you are expecting very high performance from the boilers.

Features

  • Fully compatible with vSMART™ heating control.
  • It can deliver hot water in just five seconds.
  • Hand-built in our award-winning Derbyshire manufacturing plant.
  • The overall Which? Score is 80% which is considered to be quite impressive.
  • It comes with 5-year long parts and labor warranty.
  • It can fit properly in a standard kitchen cupboard.

Product Specifications

  • Model – Vaillant Combi Boilers
  • Type – Combi
  • Output – 12kW to 65kW
  • Fuel – Gas
  • MFR – 15 L/min
  • Price – £ 925.00 to £ 1,916.88

Prices for different models of the Vaillant System Boilers:

  • VAILLANT ECO TECH PLUS 615
    • Type – System
    • Output – 15kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 822.68
  • VAILLANT ECO TECH PLUS 618
    • Type – System
    • Output – 18kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 934.80
  • VAILLANT ECO TECH PLUS 624
    • Type – System
    • Output – 24kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 1061.48
  • VAILLANT ECO TECH PLUS 630
    • Type – System
    • Output – 30kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 1228.03
  • VAILLANT ECO TECH PLUS 637
    • Type – System
    • Output – 37kW
    • Dimension – H- 720MM, W- 440MM, D- 338MM
    • Price – £ 1367.81
  • VAILLANT ECOFIT PURE 612
    • Type – System
    • Output – 12kW
    • Dimension – H- 700MM, W- 390MM, D- 295MM
    • Price – £ 844.24
  • VAILLANT ECOFIT PURE 615
    • Type – System
    • Output – 15kW
    • Dimension – H- 700MM, W- 390MM, D- 295MM
    • Price – £ 901.66
  • VAILLANT ECOFIT PURE 618
    • Type – System
    • Output – 18kW
    • Dimension – H- 700MM, W- 390MM, D- 295MM
    • Price – £ 926.40
  • VAILLANT ECOFIT PURE 625
    • Type – System
    • Output – 25kW
    • Dimension – H- 700MM, W- 390MM, D- 295MM
    • Price – £ 1115.90
  • VAILLANT ECOFIT PURE 630
    • Type – System
    • Output – 30kW
    • Dimension – H- 700MM, W- 390MM, D- 295MM
    • Price – £ 1157.39
  • VAILLANT ECOTEC EXCLUSIVE WITH GREEN IQ 27K
    • Type – System
    • Output – 27kW
    • Dimension – H- 700MM, W- 440MM, D- 338MM
    • Price – £ 1310.40
  • VAILLANT ECOTEC 46K
    • Type – System
    • Output – 46kW
    • Dimension – H- 800MM, W- 480MM, D- 450MM
    • Price – £ 2177.78
  • VAILLANT ECOTEC 65K
    • Type – System
    • Output – 65kW
    • Dimension – H- 800MM, W- 480MM, D- 450MM
    • Price – £ 2799.15
  • VAILLANT ECOTEC PLUS 64
    • Type – System
    • Output – 64kW
    • Dimension – H- 720MM, W- 440MM, D- 405MM
    • Price – £ 2583.50

About the Vaillant System Boilers:

Vaillant has been the number one boilers manufacturing company in UK striving for than 135 years to fulfill all the needs of every household, be it large or small. These boilers are totally compact like the combi boilers yet, the installation of combi boilers is easier than the system boilers. As a system boiler needs extra tank for storing the hot water. It can be beneficial for those who are having multiple bathrooms and want hot water from every taps. The user gets instant hot water as there is a tank which already stores hot water. While using taps water, you can still use it for heating the room as it has been designed purposefully to not affect the heating service of the boiler while providing hot water.

This boiler comes in a range from 12kW to 65kW.

 Advantages

  • This boiler is designed to cope with the high demand for hot water and heating system.
  • It can provide instant hot water since it already has hot water in the storage tank.
  • This boiler is considered to be the best in performance, maintenance and control.
  • This boiler is compact enough to fit in a standard kitchen cupboard
  • It has been found to be compatible with natural gas and LPG application.
  • It is eco – friendly and 80% of recyclable materials.
  • Improved insulation meaning heat loss is minimised and lower running costs.
  • No need for a cold-water feed tank means it’s ideal for smaller homes or those without loft space.

Disadvantage

  • It requires a huge space in the home for installation of the hot water tank.
  • Not ideal for the family where the demand of hot water is high and frequent as it takes some time to heat the water after finishing the tank.
  • Hot water may need to be reheated.
  • Cylinder size decides the amount of water you can use in one go.

Features

  • Designed perfectly to control energy wastage and reduce your energy bills.
  • This boiler is fully compatible with vSMART heating control and smartphone app control.
  • It is suitable for commercial and domestic usage.
  • Natural gas and LPG are eligible to be the source fuel.
  • It is equipped with energy saving two-stage frost protection system and pressure sensor to monitor the system pressure through diagnostics and a flow sensor.

Product Specifications

  • Model – Vaillant System Boilers
  • Type – System
  • Output – 12kW to 65kW
  • ErP rating – A
  • Efficiency – 89% – 95%
  • Price – £ 822.68 to £ 2,799.15

Prices for different models of the Vaillant Regular Boilers:

  • VAILLANT ECO TEC PLUS 412
    • Type – Regular
    • Output – 12kW
    • Dimension – H- 600MM, W- 375MM, D- 320MM
    • Price – £ 715.22
  • VAILLANT ECO TEC PLUS 415
    • Type – Regular
    • Output – 15kW
    • Dimension – H- 600MM, W- 375MM, D- 320MM
    • Price – £ 816.19
  • VAILLANT ECO TEC PLUS 418
    • Type – Regular
    • Output – 18kW
    • Dimension – H- 600MM, W- 375MM, D- 320MM
    • Price – £ 903.55
  • VAILLANT ECO TEC PLUS 424
    • Type – Regular
    • Output – 24kW
    • Dimension – H- 600MM, W- 375MM, D- 320MM
    • Price – £ 958.46
  • VAILLANT ECO TEC PLUS 430
    • Type – Regular
    • Output – 30kW
    • Dimension – H- 600MM, W- 375MM, D- 320MM
    • Price – £ 1014.39
  • VAILLANT ECO TEC PLUS 435
    • Type – Regular
    • Output – 35kW
    • Dimension – H- 600MM, W- 375MM, D- 320MM
    • Price – £ 1522.42
  • VAILLANT ECOFIT PURE 412
    • Type – Regular
    • Output – 12kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 730.39
  • VAILLANT ECOFIT PURE 415
    • Type – Regular
    • Output – 15kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 758.06
  • VAILLANT ECOFIT PURE 418
    • Type – Regular
    • Output – 18kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 796.79
  • VAILLANT ECOFIT PURE 425
    • Type – Regular
    • Output – 25kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 958.83
  • VAILLANT ECOFIT PURE 430
    • Type – Regular
    • Output – 30kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 695.88
  • VAILLANT ECOFIT PURE 435
    • Type – Regular
    • Output – 35kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 776.09
  • VAILLANT ECOFIT PURE REGULAR 412
    • Type – Regular
    • Output – 12kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 726.91
  • VAILLANT ECOFIT PURE REGULAR 415
    • Type – Regular
    • Output – 15kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 766.17
  • VAILLANT ECOFIT PURE REGULAR 418
    • Type – Regular
    • Output – 18kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 793.60
  • VAILLANT ECOFIT PURE REGULAR 424
    • Type – Regular
    • Output – 24kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 858.00
  • VAILLANT ECOFIT PURE REGULAR 430
    • Type – Regular
    • Output – 30kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 983.82
  • VAILLANT ECOFIT PURE REGULAR 435
    • Type – Regular
    • Output – 35kW
    • Dimension – H- 600MM, W- 375MM, D- 295MM
    • Price – £ 1433.22

About the Vaillant Regular Boilers:

These boilers are supposed to capture more than enough space in the house, unlike the other two boilers. The boiler can be installed anywhere in the house but certain fixed places are dedicated to the hot water tank and loft space as required in this type of boilers. Vaillant manufactures one of the best designs of the regular boilers, also known as heat-only boilers. Vaillant is currently manufacturing mainly three models of system boilers. The output of these models varies from 12kW to 35kW. These boilers are one of the cheapest boilers in the market. However, you must calculate the overall expenditure including the installation charges before buying any boiler. There are a lot of advantages of this boiler as you can never run out of hot water and you can use hot water through multiple taps.

Advantages

  • This boiler is designed as compact as to fit in a standard kitchen cupboard.
  • Always ready to fulfill the high demands of hot water in the family.
  • The regular boilers are highly efficient and economical.
  • This boiler is designed to reduce the carbon footprint which makes it kinder to environment than any other boilers.
  • A 5-Year of parts and labor warranty is provided however, one can extend this up to 7-10 years.
  • Helps in saving the energy fuel bills by more than expected percentage.

Disadvantages

  • Hot water does not come instantly. You have to wait for the cylinder to be full.
  • Sometimes, heat leakage from the cylinder makes it less efficient.
  • Once you have used the whole tank, you need to wait again to use it.
  • This can be costly to install.

Features

  • There is a full range of heating control options in the boiler, from our simple analogue timers to our vSMART smartphone app.
  • It has been hand-built by our award-winning Derbyshire manufacturing plant.
  • ErP A rated for heating efficiency.
  • This boiler has built-in frost protection which helps to keep it clear of any disturbances related to pipe frosting.
  • 2-5 years of parts and labor warranty.

Product Specifications

  • Model – Vaillant Regular Boilers
  • Type – Regular
  • Output – 12kW to 35kW
  • ErP rating – A
  • Warranty – 2-5 Years
  • Price – £ 695.88 to £ 1,433.22

Buying Guide

Selecting a right boiler can never be easy especially when you are given so many options only by single company and there are so many brands currently available in the market. So, rather than looking for the qualities of the boilers, we must look at our requirements. We should analyze our requirements and demands regarding a boiler and then we should look for the boilers according to our needs.

 Vaillant has been serving the households in UK for more than 135 years. It is considered that Vaillant was the first company to modernise the boiler. However, regarding the modernization of boilers, we must know that today around 70% of the old boilers are causing more damage to our environment than any other heating equipment. The boilers have evolved through ages to reduce its carbon footprint and be gentler towards the nature yet, the houses where old boilers don’t have these functions.

The different types of boilers are manufactured to suit different purposes and choices like if your house does not have enough space, you can go for combi boiler any day. If loft and hot water cylinder are already installed in your house, you must not hesitate from opting the regular boilers. This boiler has its own advantage and believe me, you will not regret this decision. However, before buying a boiler some points must be cleared out which can prove to be important in the decision-making. Some of these factors are mentioned below.

Things to keep in mind when looking for the right Vaillant Boiler for your home:

  • Size of the house – It is an important factor as it helps you understand the type of boiler you are supposed to buy for your house. The number of family members and the bathrooms available in the house should also be considered before selecting a boiler.
  • Efficiency – The efficiency of the boiler can either save your money or can make the boiler a burden on your pocket. Highly efficient boilers are considered feasible as they help you curb energy wastage and can almost cut your annual energy fuel bills up to 60%.
  • Affordable – The cost of the boilers must be compared and analyzed before buying it. Sometimes, the boilers that cost less can empty your wallet when the installation charge and taxes are includes. So, it is better to analyze the cost of different boilers.
  • Warranty – Generally, the warranty of a product symbolizes the quality that it provides. The warranty is considered to bring you mental peace so better select the boiler which provides a warranty for a longer period. 

Facts You Didn’t Know About Vaillant Boilers:

  • Vaillant has been established more than 135 years ago.
  • Johann Vaillant, tenth child of his family, founded his workshop and started working as a copper beater and pump maker in 1874.
  • It is one of the first if not the first company to manufacture the first combination boiler in THE EARLY 1960s.

https://www.vaillant.info/about-vaillant/company/history/

What Do The Experts Have To Say?

German brand Vaillant has been in the heating market for more than 135 years. Vaillant now sells products in more than 80 countries, including the UK. Vaillant offers six types of combi boilers that supply heat and instant hot water. The range starts with the basic EcoTec Pro, which is suitable for smaller homes. Vaillant also produces EcoTec Plus, EcoTec Exclusive, EcoFit Sustain, and Ecofit Pure combi boilers. You can find more details about the individual products in these ranges in our Vaillant boiler reviews. More than 7,000 members of the general public take part in our annual boiler brand reliability and customer satisfaction survey, enabling us to guide you to the best and worst boiler brands. We also conduct a survey with more than 153 trusted boiler engineers to get their independent views on which boiler brands are the best. Vaillant boilers are typically supplied with two-year parts and a labor warranty. You must get the boiler serviced after the first 12 months to qualify for the second year of warranty. The guarantee card should be registered within 30 days of the boiler being installed. Vaillant claims to have a team of 200 Gas Safe-registered engineers trained to repair and service Vaillant boilers.

Matt Knight

https://www.which.co.uk/reviews/boilers/article/boiler-brand-guides/vaillant-boiler-guide-adKRY0o3WHeH

Customer Reviews

  • Name of the customerWilliam Hobes
  • Rating – 4 out of 5
  • Place – UK
  • Date – 22-12-2020

Feedback – The boiler is fine, disappointed that the new timer is not compatible with a new boiler. The boiler is working fine, and the performance of the installer was excellent. I also purchased other Vaillant items including a thermostat (installed and working) and a timer which apparently (during the boiler installation) was found to be not compatible with the boiler even though the Vaillant website indicated simple installation and operation. So, I am operating the boiler without a timer, 24h/day.

  • Name of the customer – Gordon Carson
  • Rating – 4 out of 5
  • Place – UK
  • Date – 22-12-2020

Feedback –

Our new boiler developed an intermittent fault…Vaillant resolved this very quickly despite us living with COVID restrictions. Vaillant also kept me informed at every stage by phone, text, and email which provides reassurance that the issue was being taken seriously. The Vaillant Engineer showed up when expected, demonstrated in-depth knowledge and skill, and worked in a very methodical way to exclude all the potential causes of the fault. Three parts were replaced free of charge. All this was done within a COVID secure framework and all the surfaces of the boiler were sanitised before departure with a self-adhesive notification to advise me of this. Full marks to Vaillant for maintaining their professionalism during these difficult times…we remain cosy as we pass through the Winter Solstice.

  • Name of the customer – Mr. Mitchell
  • Rating – 4 out of 5
  • Place – UK
  • Date – 22-12-2020
  • Feedback –

I carried out an assessment of all the other major manufacturers but in the end, decided on Vaillant. More than happy with my choice of the Eco-Tec plus 430. I included the filter system to get the 10-year parts and labor guarantee. That has provided me with the peace of mind that I was looking for. So far, the boiler has been working great with no problems at all. Hopefully, that continues for a long time. The installation was carried out by Scott from Aberdeen Gas Services. The work was done to a high-quality standard. Also very tidy and COVID-19 compliant at all times. Would highly recommend both Vaillant and the installer.

https://www.trustpilot.com/review/www.vaillant.co.uk?aspects=boiler&page=2

Real-World Use Case:

I have recently had an Ecotec 938 boiler to replace my aged Worcester Bosch one. I was very satisfied with the Vaillant Accredited company who fitted the boiler who did a good job. The performance of the boiler is good and easily meets the demands of heating my 5-bedroom home (complete with high ceilings) hot water flow is also good. I opted to purchase the Vaillant Vsmart wi-fi heating control system for the boiler and that is where I have been disappointed with the level of service I received. On completion of the physical fitting of the boiler, the fitter basically left me to load the Vsmart App and to learn how to use it with no help whatsoever. Plenty of reading and watching “How To” YouTube video’s later I eventually started to master Vsmart, A second fitter visited me a couple of weeks later to replace the Vsmart as I thought it was faulty and he did exactly the same, with no guidance or help with the App whatsoever. By trial and error and after many calls to the very helpful Technical Helpline I have eventually (I think) managed to operate the Vsmart control correctly but this has taken 3 weeks. I am disappointed that I was left to discover how to use the control with no help. I am fairly confident on computers and apps so managed if you are not then without help the Vsmart system I would suggest is not for you.

John Worthington

https://www.trustpilot.com/review/www.vaillant.co.uk?aspects=boiler&page=2

FAQs

  1. What are the Vaillant Error Codes?

Error codes may appear on your boiler’s display; it’s your boiler’s way of telling you that something is wrong. Each manufacturer uses a different coding system to help an engineer to diagnose a fault. In some cases, it may be a simple issue such as low pressure which you can adjust yourself but more technical faults will certainly need a professional. We’ve put together a list of error codes for all Vaillant Boilers to help you understand what’s wrong before you contact an engineer.

  • Are there any boiler faults that it’s easy and safe to fix myself?

No-one other than a Gas Safe registered heating engineer should ever attempt to fix your boiler; it’s dangerous and it will invalidate your warranty. You can use Which? Trusted Traders to find a fully qualified and vetted heating engineer. Having said that, if your condensing boiler has stopped working during a cold snap, it’s worth checking whether the condensate pipe (the small external white pipe that takes condensate from the boiler into an external drain) has frozen up.

  • What about Vaillant Boiler Warranty?

Every boiler manufacturer offers a standard warranty with their boilers which lasts between 1-10 years. The warranty is your insurance policy and means if a fault develops the manufacturer will resolve it within a specified time frame. Some warranties include both parts and labor while others may only cover parts. The most important thing to remember is to get your boiler serviced by a Gas Safe registered engineer every year as failing to do so is likely to invalidate your warranty. For more detail about this brand’s warranty (including the small print) take a look at Vaillant Boiler Warranty.

https://www.boilerguide.co.uk/manufacturers/vaillant

Conclusion

The only thing you should conclude after reading this article is that Vaillant can’t fail you especially in terms of durability, trust, and confidence. This brand has served around 135 years to gain this trust and they are not going to betray it easily through the substandard quality of the boilers. However, you must compare the prices of installation charges which are very different in every agency. So, don’t hesitate to contact your local engineer and give them the overview of your requirements and they will help you select a proper boiler for your house as they are less prone to commit any mistake.

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