Viessmann Vitodens 050-W Combi Boiler Cost with Installation

Considered a premium-lite entry into the market, the Vitodens 050-W brings high-end German engineering to a mid-range price point. It features a durable stainless steel Inox-Radial heat exchanger and built-in WiFi for smart app control as standard, offering a reliable heating solution with many additional perks.

Discover more of the Vitodens 050-W’s specifications below:

Viessmann Vitodens 050-W Combi Product Table
	Available outputs	25kW	30kW	35kW
	Type	Combi	Combi	Combi
	Fuel	Gas	Gas	Gas
	Condensing	Yes	Yes	Yes
	Efficiency rating (%)	92	92	92
	ErP	A	A	A
	LPG compatible	Yes	Yes	Yes
	Standard guarantee	7-to-10 years*
	Max output (kW)	25	30	35
	Flow rate (l/min)	10.2	12.2	14.3
	Mounting	Wall-mounted
	Dimensions (mm)	700 x 400 x 300
	Typical price (incl. VAT)	£1,050	£1,150	£1,250
	Typical installation cost (incl. VAT)	£800 – £1,400
	Total cost	£1,850 – £2,650

*Terms and conditions apply.

Viessmann Vitodens 050-W combi overview

The Viessmann Vitodens 050-W is a fantastic option if you want the reliability of a big-name brand like Viessmann, but don’t necessarily want to step into the higher price brackets of their flagship models. It’s well-built, quiet, and packed with modern tech – making it the perfect, subtle hot water solution for your home.

As an all-in-one combi boiler, it delivers both central heating and hot water directly from the mains, so you can say goodbye to bulky hot water cylinders or storage tanks in the loft. This makes it a real winner for apartments or houses where every inch of space counts. In fact, at just 700mm high, it’s designed to tuck away neatly inside a standard kitchen cupboard.

Viessmann Vitodens 050-W Combi Range
Model output size	House size	Bathrooms	Radiators
25kW	Flats, small homes 1 to 3 bedrooms	1	Up to 10
30kW	Small-medium homes 3 to 4 bedrooms	1 & ensuite	Up to 15
35kW	Medium homes 3 to 5 bedrooms	1-2	Up to 20

Whilst it is a powerful performer, it’s important to match the kW output to your home’s specific hot water demands. With hot water flow rates ranging from 10.2 to 14.3 litres per minute, the Viessmann Vitodens 050-W combi is best suited to single-bathroom homes or those with a small ensuite.

Bigger isn’t always better – the output should suit your water needs, a larger output boiler will run less efficiently in homes with lower hot water demand and the running costs can be greater than they should be.

💡 WhatPrice Tip: Whilst the 35kW model can technically handle two bathrooms, you might notice a slight drop in pressure if both showers are running simultaneously. If you have a high-demand household with multiple bathrooms in constant use, we’d recommend looking at the Vitodens 100-W or a system boiler with a separate cylinder.

Key benefits at a glance

• ErP A-rated efficiency (92%)
• Built-in Wi-Fi with ViCare app control
• Stainless steel Inox-Radial heat exchanger
• Wide modulation range (up to 1:8)
• Compact, cupboard-friendly design
• Good hot water flow rates (up to 14.3 l/min)
• Quiet operation, suitable for living spaces
• Built-in frost protection
• Vitodens interface offers touchscreen or ViCare app control
• LPG compatible
• 5-to-7-year standard warranty, extendable to 10 years*

Viessmann Vitodens 050-W combi technical specifications

For those who like to know exactly what’s going on under the casing, this is where the Vitodens 050-W really shows its German engineering roots. It isn’t just about looking sleek in a kitchen cupboard; it’s about what’s happening inside to keep your bills low and your showers hot.

The standout feature here is the Inox-Radial stainless steel heat exchanger. While many mid-range boilers use cheaper aluminium alternatives, Viessmann uses high-grade stainless steel which is far more resistant to corrosion and build-up. You’re also getting a highly efficient unit with a 1:8 modulation ratio, meaning the boiler can tune itself to use less gas when you don’t need full power.

Here are the key technical specs for each model in the range:

Output and efficiency ratings

The Viessmann Vitodens 050-W combi is available in 25 kW, 30 kW and 35 kW output sizes, offering more flexibility than many compact combi boilers in this price bracket. All models are ErP A-rated, operating at around 92% seasonal efficiency, helping to keep fuel usage and running costs low.

We recommend the 25 kW and 30 kW models for small and medium-sized homes with one bathroom. The 35 kW model can deliver higher hot water flow rates (up to around 14.3 litres per minute) and is better suited for larger homes or properties with higher hot water demand, including homes with two bathrooms, provided hot water isn’t used heavily at the same time.

Across the range, the Vitodens 050-W benefits from a wide modulation ratio, allowing it to reduce output when demand is low. This helps avoid excessive on-off cycling and supports efficient operation throughout the year.

Dimensions 

The Vitodens 050-W is designed to be compact and cupboard-friendly. All models in the range share the same dimensions – measuring 700 mm high, 400 mm wide and 300 mm deep – making them suited for installations into standard kitchen cupboards or utility spaces without dominating the room. 

Components included

With the Viessmann Vitodens 050-W combi, we believe the standout feature is its built-in Wi-Fi connectivity. Unlike many boilers that require an additional smart control, the 050-W connects directly to Viessmann’s ViCare app, allowing you to adjust heating schedules, check system status, and make changes remotely using your phone or tablet. For many households, this removes the need to invest in a separate smart thermostat straight away.

At the heart of the boiler is Viessmann’s stainless steel Inox-Radial heat exchanger, a component the brand is particularly well known for. Stainless steel offers strong resistance to corrosion and temperature stress, especially important in hard-water areas.

This smart little boiler also includes intelligent combustion control, which automatically adjusts performance to suit demand without requiring manual input. In practice, this helps keep heating consistent and efficient, even as usage changes throughout the day.

For added reassurance, the 050-W includes built-in frost protection, helping safeguard internal components during colder conditions. This is particularly useful for installations in kitchens, garages, or properties that may be left unoccupied for short periods during winter.

Prices and installation costs

WhatPrice’s mission is to keep pricing transparent and help you understand market comparisons, so let’s take a look at what a Viessmann Vitodens 050-W combi will typically cost you. 

The Vitodens 050-W combi is currently available in three primary output options, and whilst the physical size of the unit remains the same across all three, the price increases slightly as you step up in power to meet higher hot water demands.

This price range usually includes the boiler unit and a standard horizontal flue. The flue is a critical component that safely directs combustion gases outside; while a standard side-wall flue costs roughly £100, a vertical roof flue can exceed £500 due to the increased complexity of the installation and roofing work required.

Your final bill will be influenced by several variable factors unique to the 050-W. For those off the gas grid, this model is universal, meaning it can be converted to LPG via software adjustment by the engineer rather than a physical conversion kit, saving you £40–£60. 

Whilst the boiler has built-in WiFi, many homeowners opt for the ViCare Wireless Thermostat (approx. £120-£150) for better control. 

Ultimately the standard installation cost is around £1,200, which is the price we’ve used in our cost breakdown below:

Viessmann Vitodens 050-W Combi Costs
Output size	Unit cost (incl. flue)	Total incl. installation
25kW	£1,050	£2,250
30kW	£1,150	£2,350
35kW	£1,250	£2,450

These prices are only indicative, based on our research and actual boiler prices submitted to WhatPrice by homeowners.

To get an accurate price based on your needs, you should request quotes from at least 3 Gas Safe registered installers. They can advise you on the best boiler type for your home and give you tailored estimates to compare. 

Alternatively, you can use the WhatPrice Boiler Cost Calculator to get a guide price for your installation.

Warranty and support

The warranty is one of the strongest selling points for the Viessmann Vitodens 050-W, providing a level of protection that often exceeds its immediate price rivals. The boiler typically comes with a 7-year standard parts and labour warranty as long as it is registered within 30 days of installation, though many homeowners aim for the 10-year extended warranty. 

This decade of coverage is often unlocked for free when the unit is fitted by a Viessmann Trained Installer and registered through the official portal.

A major value-add is the separate, industry-leading 10-year guarantee on the Inox-Radial stainless steel heat exchanger which comes as standard across the Vitodens range. To keep this protection active, you must ensure the boiler receives an annual service by a Gas Safe registered engineer and that the Benchmark commissioning checklist is completed at the time of install. 

💡 WhatPrice Insight: The 30-day registration window is strict; if your installer forgets to submit the paperwork, your 10-year protection could drop to just 2 years. To ensure you get a prompt, trustworthy professional who prioritises your registration, we recommend requesting quotes from 3 Gas Safe registered installers.

Installation information

The installation cost for a Viessmann Vitodens 050-W is typically around £1,200. However, it’s important to remember that no two homes are the same, and your final price will depend on a few key factors. If you’re doing a straightforward swap in the same location, costs stay on the lower end. If your engineer needs to relocate the boiler, upgrade old pipework to meet current safety standards, or navigate a tricky flue position through a roof, the labour time – and the price – will naturally increase.

What to expect on installation day

If additional work is required – such as upgrading pipework or relocating the boiler – your installer should explain this clearly beforehand, including any impact on cost or installation time.

Do you need a system flush or filter?

Yes – under UK Building Regulations, it is now a mandatory requirement to fit a filter when installing a new boiler. A flush is not required, but it can help protect your boiler and improve heating efficency.

A flush removes “sludge” (iron oxide) that has built up over the years. To keep your new Vitodens 050-W running smoothly, your installer must also fit an in-line magnetic filter. This device catches any future debris before it can reach your boiler’s internal parts, and as we mentioned earlier, it’s often a strict requirement to unlock the 10-year Viessmann warranty.

As standard, a system flush will cost between £350 and £800, whilst a magnetic system filter can cost anywhere from £65 to £300.

Finding a Gas Safe registered engineer

A boiler is only as good as the person who installs it. Because the Vitodens 050-W uses specific German components like the Inox-Radial heat exchanger, you really want someone who knows the brand inside out.

All installers must be Gas Safe registered by law, but choosing an engineer with specific Viessmann training is the best way to ensure your 30-day registration window is handled correctly and your warranty is fully protected.

You can also use the WhatPrice quote service to be matched with vetted, Gas Safe registered installers in your area. 

Reviews and ratings

Viessmann is one of the most respected heating brands globally and holds a rating of 4.4 out of 5 stars on Trustpilot in the UK. Whilst they have a smaller pool of UK reviews than some competitors – with just over 5,500 reviewers – their score reflects a very high level of consistent quality. 

We’ve collated reviews specifically relating to the Viessmann Vitodens 050-W combi, which you can see below:

Positive reviews

A recurring theme is how silent the unit is compared to older models. Many owners note that even when installed in a kitchen cupboard, the boiler is barely audible during a heating cycle.

Unlike many competitors in this price bracket that use aluminium, the 050-W features a stainless steel Inox-Radial heat exchanger – this is a major pro for reviewers, citing peace of mind knowing this part is less prone to corrosion. 

Small homeowners praise the dimensions (700mm height), reporting it fits comfortably in standard kitchen cupboards with room to spare for pipework.

The built-in WiFi and the ViCare app are big hits. Customers love the ability to monitor their energy usage and adjust temperatures from their phones without needing a separate, expensive third-party hub.

Negative reviews

Some users in larger homes (3 plus bedrooms) have complained that the 050-W can struggle with hot water priority, particularly if two taps are running at once. It is a combi boiler designed for smaller to medium homes, so it’s important you make the right choice of boiler for your water usage.

A common thread isn’t the boiler itself, but the time it takes for a Viessmann-trained engineer to attend a call-out during peak winter months – this is important to note because even the best boilers can fault, so quick responses can make a huge difference.

A small number of reviewers reported “F4” (flame loss) or “F5” (fan/flue) error codes within the first two years. Whilst usually covered under warranty, the downtime during winter was a major point of frustration.

Whilst the modern LED touchscreen looks great, some older users have reviewed it negatively, finding the touch buttons less tactile and harder to navigate than traditional knobs or dials.

How the Viessmann Vitodens 050-W combi compares

When you’re shopping for a new boiler, it’s easy to get overwhelmed by the range of competing brands and the plethora of models available. The Vitodens 050-W sits in a very competitive spot – it’s essentially a high-end German machine with a mid-range price tag.

To help you see where your money is going, here is how it stacks up against its two biggest rivals: the Worcester Bosch Greenstar 4000 (the UK’s most popular choice) and the Ideal Logic Max Combi² (the value option).

Below is a comparison to help highlight how the Viessmann Vitodens 050-W compares.

Viessmann Vitodens 050-W Combi Comparison Table
Model	Viessmann Vitodens 050-W Combi	Worcester Bosch Greenstar 4000 Combi	Ideal Logic Max Combi2
Typical unit price	£1,150	£1,200	£1,100
Heat exchanger	Stainless Steel	Aluminium	Aluminium
Standard warranty	7 Years	5 Years	2 Years
Max warranty	10 Years	10 Years	10 Years
Built-in WiFi	Yes	Yes	Optional Extra
Cupboard fit	Yes (700mm high)	No (Slightly taller)	Yes (700mm high)

Keep in mind that this comparison focuses on key features, but there may be other details that matter more for your home. For personalised guidance on choosing the right boiler, we recommend speaking with a Gas Safe registered engineer.

Final thoughts – is the Viessmann Vitodens 050-W combi right for you?

Unlike many of its rivals that require you to buy expensive external hubs or plug-in adapters, the 050-W comes with built-in WiFi as standard. This means you can control your heating and monitor energy usage through the ViCare app straight out of the box. This design makes it an ideal choice for homeowners who want total control over their bills from their smartphone without the hidden costs of extra hardware.

The Vitodens 050-W is also built for long-term durability, featuring the same Inox-Radial stainless steel heat exchanger found in Viessmann’s most expensive flagship models. Whilst many boilers in this price bracket use aluminium, the 050-W’s steel core is much more resistant to corrosion and sludge build-up. It’s also incredibly practical for different property types; for homes off the gas grid, it features full LPG compatibility that can be activated via a simple software adjustment, saving you the £40–£60 usually spent on physical conversion kits.

When compared with similar models, the Vitodens 050-W sits comfortably as a premium-lite option. Against its most popular rival, the Worcester Bosch Greenstar 4000, the Viessmann is typically £100–£200 cheaper upfront and features a more robust stainless steel heat exchanger, whereas the Worcester uses aluminium. Compared with the Ideal Logic Max Combi2, the Viessmann doesn’t always match the “all-in-the-box” convenience of bundled filters, but it offers superior build quality and the peace of mind that comes with German engineering. And while the flagship Viessmann Vitodens 100-W offers a wider modulation range and longer potential warranty extensions, the 050-W provides nearly identical performance for a significantly lower price point.

Overall, the Vitodens 050-W strikes a brilliant balance between smart technology, high-end build quality, and affordability. It is a sensible middle ground for homeowners who want a boiler that includes smart features and offers reliability, without the premium price tag of a flagship installation.

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