Viessmann Vitodens 050-W Review

Viessmann Vitodens 050-W Review

Our Viessmann Vitodens 050-W Review gives you all the relevant information on Viessmann’s entry level model for the UK market.

Winner of the Which? Best Buy for the 2nd year running in 2018, and on track for a “three-peat” in 2019, Viessmann, with all their commercial heating experience, have managed to cram this boiler with all that’s needed to give you high efficiency central heating for years.

Before we get into the nitty-gritties of the boiler review, take a look at our recent video reviewing the Viessmann Vitodens 050:


viessmann vitodens 050-w review, about

World leaders in the commercial heating space since 1917, Viessmann’s massive commercial boilers keep many of the world’s largest stadiums, corporate buildings, movie theatres warm.  That includes the Principality Stadium and the Wales Millennium Centre.

Viessmann is a £2.2 billion company.  They’ve been in operation since 1917, and now have over 12,000 employees across the world.  They have international presence with 23 production facilities in 12 countries, and subsidiaries and representations in 74 countries, along with sales offices around the world.

Viessmann are also the number 1 boiler brand in Europe, especially Germany, with Vaillant in 2nd and Junkers Bosch in 3rd.

Recent awards for Viessmann include:

  • Red Dot Award: Product Design.
  • Trophée des Usines.
  • iF product design award.
  • Number 1 Trade Partner.
  • Good Practice Energy Efficiency.

Viessmann in the UK

Viessmann Group UK

Headquartered in Telford, Shropshire, Viessmann have invested heavily into the UK market with a massive storage facility.

Their current product range includes gas, oil, steam and biomass boilers, hot water cylinders, combined heat and power generation, photovoltaics, air and ground source heat pumps, refrigeration cabinets, coldrooms and biogas plants.

Viessmann Vitodens 050-W Review

viessmann 050w review

Viessmann Vitodens 050-w review – Introduction

In this Viessmann Vitodens 050-W Review, we look at one of the best and most affordable combi boilers you can buy in the UK.  Don’t be fooled by its small price tag.  This boiler can do everything its more expensive counterparts can do, and more.

Even at one of the more attractive price points in the UK, Viessmann offer their patented Inox-Radial Stainless Steel Heat Exchangers in this boiler.  That alone is a major plus point in favour of the 050-W, because of how robust and highly efficient that heat exchanger is.

Tech Specs

  • Ultra Compact – Just 707mm in height
  • DHW output ratings of 5.9 to 35 kW
  • High quality stainless steel Inox-Radial heat exchanger
  • Stainless Steel Cylinder Burner
  • Integral instantaneous water heater
  • Low CO2 emissions for reduced environmental impact
  • Digital user interface with LCD display for easy operation
  • Optional room thermostats, plug in time clock and wireless receiver
  • Up to 7 year extended warranty available
  • Class A rated for energy efficiency

Viessmann Vitodens 050-w review – Cost

For a breakdown of the cost of new boiler, take a look at our informative blog post.

Boiler Only:  £829 for the 29kW model.  £860 for the 35kW model. (Approximate)

Boiler with Installation and Extras:  Approximately £2000 inc. VAT

What’s included in a Boiler Installation?

Removal of your old boiler, any attic tanks or hot water cylinders, carting them away from site, upgrading gas runs/pipes, converting the central heating system to combi, and then installation of the following:

  • Brand New, Modern Condensing Combination Boiler
  • Horizontal or Vertical Flue
  • Microbubble Deaerator [If Needed]
  • Magnetic Filter
  • Limescale Filter
  • Boiler Plus Legislation Compliant Programmable Thermostat
  • OR Internet Enabled Learning Thermostat
  • North Facing Weather Compensation
  • Chemical Flush & Add an Approved Inhibitor
  • Associated Pipe Work to Complete Installation
  • Registration of Extended 7-10 Years Warranties
  • Commission & Test to MFI & Complete Benchmark
  • Building Regulation Notification with Certification including Landlord Certificates
  • Hand Over & Induction on Boiler, Controls & Best Usage

Viessmann Vitodens 050-w review – Technology

Smart Controls

viessmann vitodens 050-w review, smart tado thermostat

We’ve included the Tado Smart Thermostat for this Viessmann Vitodens 050-W Review, because it’s recommended by Viessmann themselves.  You can control it wirelessly in the house, and also through a smartphone app when you’re away from the house.

This may add some cost to your boiler installation.

If you’re looking for a cheaper alternative, the EPH Combipack 4 Thermostat works great with the Vitodens 050-W as well.

We’ve done a detailed review and FAQ article for EPH Combipack 4 which answers all your questions.

It works with Nest Learning Thermostat

nest learning thermostat

Read our informative ‘Nest vs Hive’ blog post for an informative look at two of the industry’s biggest competitors for smart thermostats.

The 3rd generation Learning Thermostat from Nest can programme itself and save energy automatically when you’re away.  It learns from your behavior, i.e. when you leave the house, when you come back etc.

You can help its machine learning by instructing it via a smartphone app, or a tablet, or a computer.

What’s more, it even works with Amazon’s Alexa!  So, you can instruct it using your voice and it will obey your every command.  Granted, voice commands are still in very early stages, this looks like an exciting feature to have for the future!

Weather Compensation

Viessmann Vitodens 050-W Review, Weather Compensation

All Viessmann boilers work with weather compensation.  And this Viessmann Vitodens 050-W Review won’t be complete without Weather Compensation.

Furthermore, Boilerhut offer weather compensation as standard with all 050-W installations along with an EPH Combipack 4 Thermostat.

But how does Weather Compensation work?

A small temperature sensor is installed on the outside of your house, on a north facing wall.  This is wired to the internal controls of your boiler.  The weather compensation sensor will send information about the outside temperature to your boiler controller constantly.

So that when the temperature changes outside, the boiler responds and starts to increase or decrease the radiator temperature inside your house to compensate.

This means that when you’re cosy and warm inside your house watching the telly, you won’t even notice that the temperature has changed outside.

How does Weather Compensation Save Energy and Money?

When the outside temperature drops at night, more heat is lost through the walls of your house.  Better cavity wall insulation helps in alleviating some of that.

But if you don’t have great insulation, you’ll be glad you have weather compensation.

Because the outdoor weather compensation sensor detects the fall in temperature as soon as it happens, the boiler is able to raise the radiator temperature and keep the inside temperature stable.

Without weather compensation, the temperature is dependent on a room thermostat, which will only take effect after the inside of the building has become too hot or too cold.

Or depending on how fast you can get to the thermostat as soon as there’s a temperature change.

viessmann vitodens 050-w review, run to the thermostat!

If you let the latest technology like weather compensation adjust the radiator output automatically to maintain a constant temperature inside your house, you will not only save energy and money, but also keep your family warm and comfortable during unpredictable climate change.

Boiler Reset

As well as all these added benefits, the Viessmann Vitodens 050-W boiler is very easy to reset as well. Watch the short video below to find out how this can be done:

Patented Inox-Radial Stainless Steel Heat Exchanger

viessmann vitodens 050-w review, stainless steel heat exchanger

What makes doing the Viessmann Vitodens 050-W Review so easy is its heat exchanger.  Even some of its more expensive rivals, supposedly “premium” boiler brands in the UK use aluminium heat exchangers.

For further information on this particular component, you can also take a look at our ‘What is a Heat Exchanger?‘ blog post.

Stainless steel, specifically Viessmann’s patented “Inox-Radial” design is far more robust and corrosion resistant compared to aluminium.  Why?

Inox Stainless Steel is an alloy with a minimum of 10.5% chromium content and a maximum of 1.2% carbon by mass.  High chromium content makes stainless steel highly resistant to corrosion and staining, and also low maintenance.  Which means when you have a furnace-like environment inside a boiler on a daily basis, stainless steel, especially Inox-Radial is the heat exchanger you want inside your boiler.

How does Reliability factor into the Viessmann Vitodens 050-W Review?

Inox-Radial Stainless Steel remains durable and doesn’t lose efficiency for the life of a boiler.  Whereas aluminium corrodes and drops down in efficiency within just a few years, as you can see in this graph below:

viessmann vitodens 050-w review, heat exchanger comparison

Aluminium starts off at a higher output due to better thermal conductivity initially, but over time with daily use it drops off dramatically.  Whereas stainless steel may start off at lower output, it retains it over years of daily use, withstands extreme thermal stresses while retaining efficiency.

Viessmann Vitodens 050-w review – Verdict and Final Thoughts

Overall Rating: 9.5/10

Cost Effectiveness: 10/10

Energy Efficiency: 9/10

Unless the price difference is huge, it makes NO sense whatsoever to buy a boiler with an aluminium heat exchanger.  Unless of course you want to slap a cheap boiler on the wall, sell your house and skip town.

And when you’ve got a boiler like the Vitodens 050-W at approximately £2000 complete with expert Gas Safe installation, controls, extras, extended warranties and weather compensation, it’s a no-brainer!

If you need further reason for this to be the boiler for you, check out the video below for a real testimonial that Boilerhut acquired from a recent 050-W installation:


How do Viessmann keep the costs down on the 050-W?

Stainless steel is expensive compared to aluminium, and it takes substantial expertise creating a unique, patented heat exchanger as well.  Along with that, Viessmann boilers also have in-built shock arresters to avoid problems like water hammer.

But wait there’s more!

They also have the PRV (pressure relief valve) and condensate combined for easy installation, which is why heating engineers love it.

So, what’s the catch?  How has Viessmann managed to create a supposedly amazing boiler at this price point?  Let us explain.

Because of their vast experience and number 1 status around the world as commercial heating giants, they have 23 production facilities around the world.  So, every single part of a Viessmann boiler is manufactured in-house.  Especially the heat exchanger, which a lot of its rivals outsource from third party manufacturers.

This allows them not only to offer you, the customer, a better price point, but also control quality.  It’s a win-win for both parties.

What about Availability of Parts?

We know there’s a myth about scarcity of spare parts for “foreign” manufacturers.  That simply isn’t true anymore, because like we said, Viessmann have invested in the UK with a long term view.

All Viessmann spare parts are available at Plumbase branches around the UK, along with other prominent plumbing merchants.

Below is a map of all Plumbase locations around the UK:

viessmann spare parts availability

Comparison with other Boiler Brands

How to get the Best Possible Viessmann Boiler Installation?

Boilerhut engineers have installed thousands of Viessmann Vitodens 050-Ws across the UK and Scotland, with minimal complaints over the last 6 years.

Our engineers love it for ease of installation, and our office staff love it because of the low number of complaints.

We highly recommend it.

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