Viessmann System Boilers
Germany manufacturer Viessmann have been operating since 1917, with their Headquarters situated in Allendorf, Germany, with 23 production companies in 12 countries with over 12,000 employees across the world.
Viessmann acquired the American company Carrier in 2023, one of the giants of the World in the heating and refrigeration market and have technically become one of the world biggest heating and refrigeration manufacturers.
As a result, they’ve been able to build a company now making great leaps in technological development with German reliability and quality.
Although they’ve been operating for over a century, it was 1989 when they finally made their way to the UK shores. Concentrating on the commercial heating market, providing boilers for hospital, stadiums and hotels as well as catering for the domestic heating market.
Their headquarters in the UK are based in Telford, Shropshire. As a company now worth well over £2 billion, they’ve clearly been able to enjoy a lot of international presence.
Viessmann have extended into the domestic heating market as a company that strive to be innovative. They’re enjoying the similar success producing superior boilers.
Why Viessmannn
All Viessmann Boilers are manufactured using a quality stainless steel heat exchanger throughout their boiler ranges.
Stainless steel heat exchangers are more expensive to produce and are more durable than an aluminium heat exchanger used by many boiler manufacturers.
Stainless Steel Vs Aluminium
- When it comes to the quality of a boiler there is one component that can trump the rest and that is the heat exchanger. Viessmann boilers have their own patented stainless steel inox radial heat exchanger. This is unique to the Viessmann boiler range whilst many other boiler manufacturers including Worcester Bosch use an aluminium heat exchanger and in most cases is sourced by a third-party manufacturer.
- In the review of the best type of boilers between Viessmann and Worcester Bosch it is important to note that the use of a stainless steel heat exchanger as is the case in Viessmann means that it is highly resistant to corrosion in a wide range of pH levels.
- In the case of Worcester Bosch using aluminium as the core material for this integral part can cause the heat exchanger to corrode much faster.
- Stainless steel heat exchangers also do not require the use of special fluids to narrow the pH levels as is the case with a boiler that uses an aluminium heat exchanger, something which all homeowners should make a note of.
- A big thumbs down for Worcester Bosch is that if the heat exchanger is damaged through the improper use of these fluids, then this can void your warranty completely, something which owners of a Viessmann boiler need not worry.
- Stainless steel is a much more expensive material to source than aluminium which is why most boiler manufacturers tend to use aluminium but that does bring with it, some reliability issues.
- Whilst aluminium means that the boiler can remain lightweight and will benefit from a better thermal conductivity, stainless steel over the long run will work out much better value for money for the end consumer. This is due to the fact that aluminium will corrode and break down long before stainless steel.
- A boiler with a quality stainless steel heat exchanger will increase the life of the boiler and will mean less chance of a breakdown or maintenance call outs.
- We thought it would be a good idea to show you the difference in the overall lifespan of an aluminium heat exchanger compared to a stainless steel heat exchanger.
What type of boiler are you looking for?
Electric Boilers
Compact sizes. Perfect for smaller properties
No need for a hot water cylinder allows increased living space
Gas Boilers
Ideal for homes with more than one bathroom
Constant supply of hot water to any number of taps at the same time
Oil Boilers
Perfect for homes where a lot of hot water is used at the same time
Ideal where there are two or more bathrooms
VIESSMANN SYSTEM BOILER RANGE
Viessmann Vitodens 100-W
Viessmann Mid-Range System Boiler Offering Premium Boiler Performance and 4 Pipe Configuration
- Very attractive price/performance ratio Class A rated for energy efficiency. With reliable Viessmann product quality
- Durable and efficient Up to 94% of the fuel used is converted into heat.
- MatriX-Plus burner With Lambda Pro combustion controller for consistently high efficiency and clean combustion
- Simple and intuitive operation Via LCD screen with 7-segment display and touch buttons; alternatively, via mobile device
- Web-enabled via integrated WiFi interface For more convenience, energy savings and security with ViCare
- Natural gas with 20 % hydrogen content Certified for 20 % hydrogen content in natural gas.
- 7 years standard warranty 12 years if installed by Heating Improvements Ltd extra 2 year at
Viessmann Vitodens 100-W Combination Boiler
| 11Kw | 19Kw | 25Kw + 32Kw |
| Ideal For | ||
| Small Homes | Medium Sizes Homes | Bigger Homes With 2 Baths |
| DHW Flow Rates | ||
| 10:1 | 10:1 | 10:1 |
| Modulation | ||
| 17:1 | 17:1 | 17:1 |
| Dimensions | ||
| 400(W) x 700(H) x 360(D) | 400(W) x 700(H) x 360(D) | 400(W) x 700(H) x 360(D) |
| Comparable To | Worcester 8000, Vaillant ecoTEC PLUS, | |
Viessmann Vitodens 200-W
Viessmann Top of The Range System Boiler Offering Unrivalled Performance and Efficiency
- 7 years standard warranty Up to 12 years extended warranty available.
- Energy efficiency class: Energy efficiency class: A
- Exemplary price With reliable Viessmann product quality
- Durable and efficient Thanks to Inox-Radial heat exchanger
- MatriX-Plus burner With Lambda Pro Plus combustion controller for consistently high efficiency and clean combustion
- Innovative operating concept With 7-inch colour touchscreen
- Web-enabled via integral WiFi interface For operation and service via Viessmann apps
- Futureproof: H₂ ready Certified for the combustion of natural gas with 20 % hydrogen (H₂)
- Efficient Up to 98% ERP efficiency
- Modulation range 1:17 No Boiler on the Market Is as Efficient
- Compact dimensions Only 450 mm wide
Viessmann Vitodens 200-W System Boiler
| 11Kw | 19Kw | 25Kw + 32Kw |
| Ideal For | ||
| Small Homes | Medium Sizes Homes | Bigger Homes With 2 Baths |
| DHW Flow Rates | ||
| 10:1 | 10:1 | 10:1 |
| Modulation | ||
| 17:1 | 17:1 | 17:1 |
| Dimensions | ||
| 400(W) x 700(H) x 360(D) | 400(W) x 700(H) x 360(D) | 400(W) x 700(H) x 360(D) |
| Comparable To | Comparable To NO PEERS…. | |