Like Worcester Bosch, Vaillant are one of the few premium brand boilers out there. Vaillant boilers offer the highest quality, reliability, and performance; this is why brand loyalty is such a big factor for Vaillant.
Regular winners of Which? Best Buy awards and holders of the Quiet Mark accreditation for their quiet-running boilers.
Vaillant offers a selection of combination, system, and regular boilers. If you aren’t sure what boiler type you have, then you can read our blog so you know what you’re looking for.
Once you know what boiler type you’re looking for, you can use the WarmZilla boiler comparison function below. Just select up to 3 boilers you want to compare and you’ll be able to compare key stats side by side to see which Vaillant boiler is best for you.
You can also take the WarmZilla survey, by answering a few simple questions about your home we will be able to recommend suitable boilers for your heating and hot water requirements. You can get a quote on a new boiler in just a few minutes without adding any personal details.
WarmZilla is proud to offer Vaillant boilers. Vaillant boilers meet our criteria of energy efficiency, performance, reliability, and aftercare.
WarmZilla offers a range of combi, system, and regular gas condensing boilers from Vaillant in a range of kW options to suit small flats, apartments, and any size home. We don’t sell commercial Vaillant boilers.
WarmZilla offers the Vaillant ecoTEC Pro and the ecoTEC Plus ranges in combi, system, and regular boiler types.
All Vaillant boilers sold by WarmZilla come with Gas Safe installation, system filter, system cleanse, inhibitor, wireless controls, up to 12 years guarantee, any flues or extension kits you may need; plus, if your condensate or gas pipes require upgrading – that’s included in your fixed price Vaillant boiler quote too!
You can also upgrade your wireless controls to a choice of smart thermostats and you can add radiators to your order – all your heating requirements with one easy online purchase.
Vaillant boilers from WarmZilla start from £1899 when purchased outright or £12.50 per month when buying your Vaillant boiler on finance.
Vaillant boiler prices vary depending on the model you choose and the kW output of the model you require. The Vaillant EcoTec Pro 24kW is our cheapest boiler, starting at £1899.
You can get a quote now and find out exactly how much your new Vaillant boiler will cost, in a few minutes using the WarmZilla online survey.
An annual boiler service can help you to avoid any issues that may arise when it comes to turning your central heating back on during the winter months.
A boiler is one of the most essential appliances in your home, which is why it’s important that it gets serviced regularly so that it remains efficient and safe to use in your home.
Your boiler service must be carried out by a qualified Gas Safe Engineer. They will look at the full list of boiler components and carry out the necessary tweaks, replacements, or cleaning needed.
The boiler checklist will include the following:
- Checking the flue system inside and outside the boiler
- Checking the boiler flame
- Removing the boiler casing to ensure that the burner, heat exchanger and spark electrode are working correctly
- Check the case seal is still effective
- Check the water-level control, low-water cut-off and safety valves are all in good condition
- Firing up the boiler to check for any possible faults
- Check that the expansion vessel is regulating the boiler pressure correctly
- Clean any necessary parts
Your installer should leave you with a comprehensive list of checks in the servicing and maintenance section of the installation manual.
Having an annual service not only keeps your boiler nice and healthy and extends its lifespan but also saves you money on unnecessary future repairs that may be needed.
On average, a boiler service costs between £70 and £120 depending on your provider. For a one-off cost, it is worth checking that your boiler is in good nick for the next 365 days.
Combi boilers are a great option for smaller homes with limited space. This is because they remove the need for any additional tanks or cylinders, helping you save space in your home. Because of this, they have become a popular choice of boiler for many homes in the U.K.
The Vaillant EcoTec Plus 825 has a central heating output rating of 20.4kW and a hot water output of 25kW, great for a smaller home with up to 10 radiators and a single bathroom. The EcoTec Plus 825 is the least powerful of its range. If you feel that your home has a higher demand for central heating and hot water, this EcoTec Plus range has the 832, the 835 and the EcoTec Plus 838, so there is an option for everyone.
The EcoPlus 832 is compact and lightweight, designed perfectly for smaller properties with limited space. Its size means that it can be fitted neatly into your kitchen cupboard, out of sight, out of mind. Combi boilers are also great because they do not require the need for any additional cylinders or tanks, as both the hot water and central heating are built into one unit, saving space in your home.
The EcoTec Plus 832 has a central heating output of 25.7kW and a domestic hot water output of 31.8kW, making it powerful enough to meet the demands of a home with between 15 and 20 radiators and 1-2 bathrooms. However, if you feel that these output levels don’t meet the requirements of your home, Vaillant has also created the EcoTec Plus 835, 838, as well as the EcoTec Plus Store 938, which reach up to 32.2kW for heating and 37.7kW in hot water for homes with higher demand. For smaller homes that have a lesser demand for instant hot water, the EcoTec Plus 825 is available.
The EcoTec Plus 835 has an output of 32.2kW for central heating and 35kW for hot water, ideal for homes with between 15 and 20 radiators and up to 2 bathrooms. If you feel that these output levels don’t meet the requirements of your home, Vaillant has also created the EcoTec Plus 838 as well as the EcoTec Plus Store 938, which reach up to 32.2kW for heating and 37.7kW for hot water, which are better suited for homes with higher demand. If you feel that this output may be too powerful, the EcoTec Plus 825 and 832 are available.
The EcoPlus 835 is compact and lightweight, designed perfectly for smaller properties with limited space. Its size means that it can be fitted neatly into your kitchen cupboard, out of sight, out of mind. Combi boilers are also great because they do not require the need for any additional cylinders or tanks, as both the hot water and central heating are built into one unit, saving space in your home.
The Vaillant EcoTec Plus 838 has a central heating output rating of 30.1kW, which is one of the most powerful in its range and great for small to medium-sized homes with up to 20 radiators. The domestic hot water output is 38.7kW is perfect for homes with two bathrooms including a bath.
As mentioned, the EcoTec Plus 838 is one of the most powerful in its range, with only the EcoTec 938 offering more power. If your home does not require this demand for central heating or hot water, then Vaillant has designed the EcoTec Plus 825, 832, and 835, which may be better suited to your home.
Combi boilers are a great option for smaller homes with limited space. This is because they remove the need for any additional tanks or cylinders, helping you save space in your home. As a result of this, they have become a popular choice of boiler in the U.K.
With an output rating of 30.9kW for central heating and 38.7kW for domestic hot water, this combi boiler is perfect for homes with over 20 radiators and 2 bathrooms.
This model is known for its reliability and efficiency, thanks to its 94% efficiency and ErP A-rating for both heating and hot water. Depending on your current boilers efficiency rating, this combi boiler could potentially help you to reduce your energy bills and lower your carbon footprint.
Although the boiler unit has been designed to be compact, with an integrated hot water storage device at the back of the boiler, it is important to note that this combi boiler is larger than your typical combi boiler, so will not be able to fit in replacement to a standard kitchen cupboard. A combi boiler supplies hot water and heating on demand by using the mains water supply. This means you don’t need to have bulky tanks or cylinders – making them perfect for smaller homes or properties where space is limited.
If your home does not require this amount of power, the EcoTec Plus range also offers the 825, 832, 835, and 838, which have outputs of between 20.4kW and 30.9kW for central heating, which could be better suited to your home.
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