


Viessmann offers a full range of high-quality products that represent German engineering at its finest. Extremely reliable boilers that offer great performance are one of the reasons why Viessmann regularly picks up the Which? Best Buy award.
Viessmann has a wide range of high energy-efficiency combi, system, and regular boilers available.
Viessmann Boilers
If you’re a big fan of precision German engineering, then there will certainly be a Viessmann boiler suited to your home. Viessmann boilers are renowned for performance and reliability, Which? Brand reviews have them just behind Worcester Bosch and Vaillant but they are classed as a premium brand boiler.
Viessmann manufactures a range of combi, system, and regular boilers. If you aren’t sure what boiler type you have, check out our blog, it’s important to know your boiler type before getting any boiler quotes.
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 Viessmann (or any other boiler brand) 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 stocks the Viessmann 050w and the Viessmann 100w boiler ranges because Viessmann offers excellent reliability on boilers with very high levels of energy efficiency.
WarmZilla currently offers combi gas condensing boilers from Viessmann in a range of kW options to suit small flats, apartments, and any size home.
Viessmann boilers sold by WarmZilla come with Gas Safe installation, system filter, system cleanse, inhibitor, wireless thermostat, 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 Viessmann boiler quote too!
You can also upgrade your wireless thermostat to a choice of smart thermostats and you can add radiators to your order – all your heating requirements with one easy online purchase.
Viessmann boiler prices vary depending on the model you choose and the kW output of the model you require. You can get a boiler quote now and find out exactly how much your new Viessmann boiler will cost, in a few minutes using the WarmZilla online survey.
Having heating and hot water in your home is crucial, which is why it is essential to ensure that you get your boiler annually serviced so that it can perform to its maximum efficiency.
Have your boiler serviced annually ensures greater reliability of your boiler, increases its lifespan, enhances safety for you and your home, and ensures that your boiler warranty is protected.
A typical boiler service consists of:
- A full inspection of your boiler’s components by a Gas Safe Engineer
- An inspection of the main injector, spark probe, and burner to the heat exchanger, electrical connections, and controls.
- Your Gas Safe Engineer should also check all the seals, pipework, and combustion releases to make sure that your boiler is functioning at the correct pressure
- Replacement of any damaged or worn parts
- Clean the necessary components to ensure your boiler is performing as effectively as possible.
When should you arrange a boiler service?
Your boiler manufacturer will often mention that your boiler requires an annual service to ensure maximum efficiency and to protect your warranty. If you don’t get an annual service, you could end up paying for repairs, which can be quite costly depending on the boiler fault.
Other signs that you should look out for that indicate that you need a boiler service are:
- If you see increased condensation in the room where your boiler is located
- Black stains or marks around your boiler
- The flame in your boiler changing from blue to yellow.
If you start to feel nausea, tiredness, dizziness, start vomiting or having headaches, stomach pains or have difficulty breathing, please call your Gas Engineer immediately and vacate the property, as this could be a sign of Carbon Monoxide poisoning.
The Viessmann Vitodens 100-W standard gas boiler is a compact wall-mounted unit that is designed to fit into a standard kitchen cupboard. With a modern design, it offers MatriX-Plus burner that helps control combustion allowing for clearer gases to be expelled.
With smart capabilities altering the heating can be controlled in the palm of your hand with a smartphone or smart device. However, there is a large, modernised, user-friendly display control on the boiler, so if smart devices are not your thing, manually is also a great option. This boiler is also very quiet and ideal for rooms that are occupied by an individual. The Vitodens 100-W is also 20% hydrogen ready which will help reduce emissions and energy bills.
The Viessmann Vitodens 100-W standard gas boiler is a compact wall-mounted unit that is designed to fit into a standard kitchen cupboard. With a modern design, it offers MatriX-Plus burner that helps control combustion allowing for clearer gases to be expelled.
With smart capabilities altering the heating can be controlled in the palm of your hand with a smartphone or smart device. However, there is a large, modernised, user-friendly display control on the boiler, so if smart devices are not your thing, manually is also a great option. This boiler is also very quiet and ideal for rooms that are occupied by an individual. The Vitodens 100-W is also 20% hydrogen ready which will help reduce emissions and energy bills.
The Viessmann Vitodens 100-W standard gas boiler is a compact wall-mounted unit that is designed to fit into a standard kitchen cupboard. With a modern design, it offers MatriX-Plus burner that helps control combustion allowing for clearer gases to be expelled.
With smart capabilities altering the heating can be controlled in the palm of your hand with a smartphone or smart device. However, there is a large, modernised, user-friendly display control on the boiler, so if smart devices are not your thing, manually is also a great option. This boiler is also very quiet and ideal for rooms that are occupied by an individual. The Vitodens 100-W is also 20% hydrogen ready which will help reduce emissions and energy bills.
The Viessmann Vitodens 100-W standard gas boiler is a compact wall-mounted unit that is designed to fit into a standard kitchen cupboard. With a modern design, it offers MatriX-Plus burner that helps control combustion allowing for clearer gases to be expelled.
With smart capabilities altering the heating can be controlled in the palm of your hand with a smartphone or smart device. However, there is a large, modernised, user-friendly display control on the boiler, so if smart devices are not your thing, manually is also a great option. This boiler is also very quiet and ideal for rooms that are occupied by an individual. The Vitodens 100-W is also 20% hydrogen ready which will help reduce emissions and energy bills.
The Viessmann Vitodens 100-W standard gas boiler is a compact wall-mounted unit that is designed to fit into a standard kitchen cupboard. With a modern design, it offers MatriX-Plus burner that helps control combustion allowing for clearer gases to be expelled.
With smart capabilities altering the heating can be controlled in the palm of your hand with a smartphone or smart device. However, there is a large, modernised, user-friendly display control on the boiler, so if smart devices are not your thing, manually is also a great option. This boiler is also very quiet and ideal for rooms that are occupied by an individual. The Vitodens 100-W is also 20% hydrogen ready which will help reduce emissions and energy bills.
Thanks to its high-efficiency rating of 94% and an ErP A-rating for heat, the Vitodens 100-W 35kW regular boiler is known for its reliability and efficiency. Depending on your current boilers efficiency rating, this boiler could help to reduce your energy bills.
With regards to output, the 35kW is the most powerful of its range, powerful enough to heat a home with up to 20 radiators. The Vitodens range includes five boilers, four of which have lower outputs, therefore if your property has less than 15 radiators and does not require this output for central heating and hot water, then the Vitodens 100-W 13kW, 16kW, 19kW, or the Vitodens 100-W 26kW could be better suited to your home.
The Vitodens 100-W 35kw regular boiler is compact and lightweight, meaning that installation will be quick and simple, and any future maintenance or servicing should be more cost-effective.
Regular boilers are not recommended for smaller homes with limited space, this is because they require an additional hot water cylinder, normally located in an airing cupboard or similar sized space in your home, as well as a feed and an expansion tank. These are typically installed in the attic of a home. Also, if you don’t already have a regular boiler installed then a system or combi boiler would be more appropriate due to the complex pipework needed.