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Last updated: 5th September, 2024

Guides

Vaillant Boiler Parts 2024

Vaillant Boiler Parts 2024

Key takeaways

  • Genuine Vaillant boiler parts ensure reliability and safety.
  • Various online stockists provide fast and convenient delivery.
  • Technical support and detailed guides are available for maintenance.

Vaillant boilers use a variety of parts to ensure efficient operation. This section looks at common replacement parts and specific components unique to Vaillant boilers.

Understanding Vaillant boiler parts is essential for anyone looking to maintain or repair their heating system. Vaillant is known for its high-quality boilers, which are a common choice in many homes due to their reliability and efficiency. Accessing genuine Vaillant boiler parts can significantly extend the lifespan of your boiler. Whether you're dealing with a combi, system, or heat-only boiler, using authentic parts will ensure proper functionality and safety.

Purchasing the right Vaillant boiler part can be straightforward with the numerous resources available. Online stores like Boiler Parts UK and Heating Spare Parts offer fast delivery and a wide selection of components, from PCBs and pumps to fans and thermostats. Official stockists such as Wolseley and Heating Spare Parts provide detailed diagrams and user instructions to help identify exactly what you need.

Reliable customer support and resources are crucial when dealing with boiler maintenance. Vaillant's official stockists and dedicated customer service teams offer technical help, ensuring you have everything required to keep your boiler running smoothly. A commitment to using genuine parts not only aids in efficient boiler operation but also provides peace of mind.

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Understanding Vaillant Boilers

Vaillant boilers come in various types and models, each with unique specifications and features. Identifying the model of your Vaillant boiler is crucial for maintenance and repair tasks.

Model Overview and Specifications

Vaillant's boiler lineup includes popular models such as ecomax, ecotec, and turbomax. Each model serves different needs and settings. Ecomax and ecotec are known for their energy efficiency. Condensing boilers in the ecotec plus range offer improved performance by utilising heat that would otherwise be wasted.

The thermocompact series is designed for small spaces but delivers powerful heating. VUW and VCW models are versatile, often used in both residential and commercial buildings. VU models focus on heating, while VUW variants include domestic hot water supply.

Identifying Your Vaillant Boiler Model

To identify your Vaillant boiler model, look for a data plate, usually found on the side or bottom of the unit. This data plate will list the model name or number, such as ecotec plus, VU, or VCW.

Knowing your model is important for ordering parts and scheduling maintenance. For example, if you have an ecotec Combi from 2012 onwards, common issues may include gas valve failures. Having the exact model information helps in diagnosing problems and ensuring the use of genuine Vaillant parts.

Types of Vaillant Boiler Parts

Vaillant boilers use a variety of parts to ensure efficient operation. This section looks at common replacement parts and specific components unique to Vaillant boilers.

Common Vaillant Replacement Spares

Pumps: Essential for circulating water throughout the boiler system, pumps ensure heated water reaches all parts of the system efficiently.

Heat Exchangers: They transfer heat from the burner to the water. These can wear out over time and need replacing to maintain efficiency.

Expansion Vessels: These handle the expansion of water when heated, preventing excessive pressure build-up within the system.

Fans: Important for ventilation, fans help to expel gas safely from the boiler.

Sensors: These monitor various aspects such as temperature and pressure, ensuring the boiler operates safely and efficiently.

Diverter Valves: These control the flow of water within the boiler, directing it either to the taps or to the radiators.

Vaillant-Specific Components

ecoTEC Parts: These parts are designed specifically for the ecoTEC range, including printed circuit boards (PCBs) and thermostats tailored to enhance performance.

ecoMAX Components: Similar to the ecoTEC parts, ecoMAX components include specialised gas valves and thermostats for better control and efficiency.

Genuine Spares: Vaillant guarantees the availability of genuine parts for up to 15 years after production ends. Using genuine components helps maintain the warranty and ensures compatibility.

Combi Boiler Parts: Specific to Vaillant combi boilers, these include unique diverter valves and sensors that are critical for the dual heating and hot water system.

Heat Only Boiler Parts: These boilers have their unique set of parts, often requiring different types of pumps and fans compared to other models.

Condensing Boiler Parts: Designed to improve efficiency, parts like the heat exchanger are specifically made to handle the condensation process effectively.

Purchasing Vaillant Genuine Parts

When buying Vaillant boiler parts, choosing genuine spares is important for safety, quality, and reliability. It's also crucial to find a dependable supplier who can provide these parts promptly.

Benefits of Genuine Vaillant Spares

Using genuine Vaillant parts ensures that your boiler operates safely and efficiently. These parts are tested and authorised by the manufacturer, which guarantees their high quality. Genuine parts also fit perfectly, reducing the risk of malfunction.

Moreover, genuine spares often come with a warranty, giving extra peace of mind. Using original parts can prolong the life of your boiler. Non-original parts might be cheaper initially, but they can lead to more problems and costs in the long run.

Finding a Reliable Vaillant Parts Supplier

Finding a reliable supplier is vital to ensure you get genuine Vaillant boiler spares without delays. Look for suppliers who are official stockists. These suppliers have direct access to authentic parts and usually have them in stock.

Good suppliers offer various services, such as overnight delivery, which is crucial for urgent repairs. They should also provide technical support to help you identify the correct parts for your boiler. Reading customer reviews and checking for guarantees and return policies can also help you choose the right supplier.

Maintaining Your Vaillant Boiler

Proper maintenance of your Vaillant boiler ensures it runs safely and efficiently. Regular servicing and troubleshooting can prevent many common issues and extend the life of your boiler.

Preventive Maintenance Tips

Regular cleaning helps maintain efficiency. Remove dust and debris from around the boiler to prevent blockages. Check the pressure gauge; it should be between 1 and 1.5 bars. If the pressure is too low or too high, adjust it accordingly.

Annual servicing by a certified engineer is essential. They will perform safety checks, inspect components, and replace worn parts. This can prevent breakdowns and costly repairs. Always use genuine Vaillant parts for replacements. They are designed specifically for your boiler, ensuring reliability.

Bleed your radiators regularly to remove trapped air. This can improve heating efficiency and reduce strain on the boiler. Check for any water leaks. Even small leaks can cause significant damage over time. Promptly address any issues you find.

Troubleshooting Common Issues

If your boiler won't turn on, check the power supply. Ensure the boiler is plugged in and the fuse isn't blown. Reset the boiler if necessary, following the manufacturer’s instructions.

For heating issues, check the thermostat. Make sure it is set correctly and the batteries are working. If the radiators are not heating evenly, this could indicate sludge buildup. A power flush might be needed.

If the boiler is losing pressure, look for leaks in the system. Inspect visible pipework and radiators. Repressurise the system according to the manual. For persistent problems, contact customer service or a certified technician. They can provide professional assistance.

For noisy boilers, possible causes include low water pressure, a faulty pump, or kettling. Addressing these issues promptly can prevent further damage. Regular maintenance and using quality parts contribute to a quieter, more reliable boiler.

Installation and Replacement of Parts

Proper installation and timely replacement of Vaillant boiler parts are key to ensuring efficient and safe operation. Understanding the steps and recognising when to call a professional are essential.

Step-by-Step Part Installation

Installing Vaillant boiler parts involves several steps to ensure proper fitting and operation. Begin by turning off the boiler and disconnecting it from the power supply. Ensure the gas supply is also turned off.

Next, refer to the Vaillant user manual for detailed instructions on removing the old part. Common parts like air pressure switches, divertor valves, and gas valves have specific removal processes. Carefully remove the faulty part using appropriate tools, avoiding damage to surrounding components.

Unpack the new Vaillant spare part, ensuring it is an authentic part to maintain warranty. Install the new part by connecting it in the reverse order of removal. Secure all connections firmly, avoiding overtightening.

Finally, reconnect the power and gas supply. Turn on the boiler and monitor for any error codes or unusual noises. Regular checks and maintenance can prevent further issues.

When to Seek Professional Assistance

While many minor parts like thermostats and sensors can be replaced by homeowners, some situations warrant professional help. Complex parts like the printed circuit board or heat exchangers require advanced knowledge to replace safely.

If the installation manual for your Vaillant model, such as Thermocompact or Turbomax Plus, seems unclear or if the issue persists after replacing a part, professional assistance is advisable. Signs to watch for include persistent error codes, leaks, or the boiler failing to heat water effectively.

Professionals have the tools and expertise to address these issues promptly. They can ensure that your boiler, whether it’s an Ecomax or Aquaplus, operates efficiently and safely, preventing future breakdowns. Always contact a qualified technician when in doubt.

Additional Resources and Support

Vaillant Boiler Parts come with various forms of support and additional resources, ensuring efficient maintenance and operation.

Warranty and After-Sales Support

Vaillant provides a robust warranty and exceptional after-sales support for their boilers and spare parts. Customers can benefit from an annual maintenance and support plan or opt for one-off repair services through myVAILLANT Web.

For quick assistance, customers can contact customer service directly. Their support is designed to keep your heating system working smoothly, offering peace of mind through reliable and certified repairs. Vaillant's support structure helps avoid prolonged downtimes and ensures that genuine parts are always used in your appliances.

Technical Literature and Guides

Vaillant offers extensive technical literature and user guides to help customers understand and maintain their boilers. These include datasheets, detailed diagrams, and service manuals available from various stockists and the official Vaillant website.

Specific guides help in identifying spare parts quickly. Additionally, installers have access to resources that ensure the appliances are set up correctly, improving efficiency and safety. The clear, step-by-step instructions make it easier to troubleshoot minor issues without professional help, saving time and costs for users.

iHeat New Boiler Cost

New boilers can be a daunting purchase for many people as they’re an appliance with a lot of responsibility, providing heat for you and your family is something you want to get right. Boilers aren’t exactly a quickly disposable item either, potentially lasting you a decade.

Effectively, new boiler cost can be split into two segments: the first is the actual boiler itself (unit price), and the second is the cost of the boiler being installed (set up) in your property by an expert engineer. 

Here at iHeat, we remove all of this undue stress and make the decision making process of upgrading to a new heating system, as easy as possible.

New boiler costs can vary depending on a number of factors including their brand, model, fuel, output, warranty, labour and boiler installation type. Typically a new boiler will cost between £1,845 and £3,500, below is a list of average boiler installations offered by iHeat (guide only).

Installation Type

Price (inc VAT)

Combi to combi swap

£1,845

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System to combi conversion

£2,499

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New boiler install

£2,899

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Back boiler to a combi

£3,299

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System to system

£1,945

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Frequently Asked Questions

Who Makes Vaillant Boilers?

Vaillant boilers are produced by the Vaillant Group, a leading manufacturer based in Remscheid, Germany. The company has been specializing in heating systems for over 140 years, known for their innovation and quality.

How Much to Replace Diverter Valve Vaillant Boiler?

The cost to replace a diverter valve in a Vaillant boiler typically ranges from £200 to £300, including labour. The exact price can vary based on the specific boiler model and the technician’s rates.

How Do You Clear Faults on a Vaillant Boiler?

To clear faults on a Vaillant boiler, locate the reset button on the control panel. Press and hold the button for a few seconds until the boiler restarts. For persistent issues or specific fault codes, consult the user manual or contact a qualified technician for assistance.

Why Is My Vaillant Boiler Not Firing Up for Heating?

If your Vaillant boiler is not firing up for heating, potential issues include low water pressure, a faulty thermostat, or a blocked burner. Check the boiler’s display for error codes and refer to the user manual. If the issue persists, a qualified technician should diagnose and repair the problem.

Why Does My Vaillant Boiler Keep Firing Up When Heating Is Off?

If your Vaillant boiler keeps firing up when the heating is off, it could be due to a faulty timer or programmer, incorrect settings, or issues with the boiler’s sensors. Professional diagnosis is recommended to resolve the issue.

Why Does My Boiler Kick In When Nothing Is On?

Boilers may kick in when nothing is on due to features like frost protection or anti-cycling functions. These functions help prevent freezing and reduce wear by running the boiler periodically, even if heating is not actively needed.

Why Does My Boiler Fire Up Then Cut Out?

A boiler that fires up and then cuts out repeatedly may have issues such as low water pressure, a faulty pump, or blocked heat exchangers. Check the pressure gauge and ensure proper flow. If the problem persists, a professional inspection is often necessary to diagnose and address the issue.

Stephen Day profile photo
Article by
Stephen Day | Co-founder
Gas Safe registered and FGAS certified engineer with over 20 years experience in the heating and cooling industry.