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Viessmann Vitodens 100-W Combi Boilers

With three outputs available, the Viessmann Vitodens 100-W Combi Boiler ranges between £1,097.67 and £1,159.05 including VAT and excluding installation.

Viessmann Vitodens 100-W Combi Boilers

Designed and manufactured by Viessmann is Germany, the Vitodens 100-W Combi is a gas-fired condensing combination boiler that features innovative technology and is available in three outputs of 26kW, 30kW and 35kW.

By being a combi, it is both a water heater and central heating unit all in one, so you won’t need any separate tanks or cylinders. Its compact dimensions of 700mm (H) x 400mm (W) x 350mm (D) means that this model can be wall-mounted in a variety of locations within the home.

Vitodens 100-W Combi prices typically range from £1,097.67 to £1,159.05, and that includes a standard 5-year warranty. If you choose to have the boiler installed by a Viessmann trained installer, you’ll be offered an extended warranty of 10 years.

Boiler Energy Efficiency Credentials

With a SEDBUK seasonal efficiency rating of 89.5%, the Vitodens 100-W Combi is a high efficiency A rated boiler. It comes with a stainless steel Inox-Radical heat exchanger with an extremely high efficiency rate of 98%, which means you’re guaranteed efficient operation from day one. The boiler even has a modulation range of 1:6 so that it can adapt to heat demand to reduce energy wastage and save you money on your fuel bills. If you want to control your heating from a smartphone and achieve greater energy savings, you also have the option to use the boiler with a tado° thermostat and app.

Vitodens 100-W Combi Technology and Main Advantages

This popular combi by Viessmann comes with a simple backlit LCD touchscreen to make it easy for you to manage and adjust boiler temperatures, even when the unit is installed in a dark area of your home. It also offers siting flexibility and improved installation options as it can be supplied with max flue lengths of 19 metres.

The range includes three output sizes with different maximum hot water flow rates, which are as follows:

  • Vitodens 100-W 26kW Combi – 10 litres per minute
  • Vitodens 100-W 30kW Combi – 12 litres per minute
  • Vitodens 100-W 35kW Combi – 14 litres per minute

Its stainless steel Inox-Radical heat exchanger with 10-year guarantee not only improves operational efficiency but also reliability and performance. Then there’s the modulation ratio we mentioned above, which helps to keep operating noise to a minimum and lower the level of stress that is placed on the components. And if you need the boiler to run on LPG (liquefied petroleum gas) rather than natural gas, an LPG conversion kit is available.

Is the Viessmann Vitodens 100-W Combi the Right Boiler Type and Size for Your Home?

As the Vitodens 100-W Combi comes in three different outputs, there is a solution to suit most households including flats, bungalow and houses of all sizes. The boiler is also a great choice for homes with limited loft and storage space because no bulky tanks or cylinders are needed. For properties with a higher demand for heating and hot water, the higher kilowatt output and flow rate will be required. Having said that, it’s impossible to say which size boiler you’ll need without knowing the size of your home and your typical usage habits, so you must consult with a Gas Safe engineer before choosing a boiler.

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MODELTYPE DIMENSIONSMAX FLOW RATOUTPUTEFFICIENCY TYPICAL PRICE
Viessmann Vitodens 100-W Combi 26kW Combi H - 700 mm
W - 400 mm
D - 350 mm
10.6 26 KW£ 1114.88
Viessmann Vitodens 100-W Combi 30kWCombi H - 700 mm
W - 400 mm
D - 350 mm
12.3 30 KW£ 1097.67
Viessmann Vitodens 100-W Combi 35kWCombiH - 700 mm
W - 400 mm
D - 350 mm
14 35 KW£ 1159.05

KEY FEATURES & BENEFITS

A-rated combi boiler Save money on your gas bills
Endorsed by Which? in 2017Tested and recommended
Low CO2 emissions Environmentally friendly
Inox-Radical heat exchangerExcellent performance
Simple backlit LCD touchscreen Simple to operate
Low level of operating noise Ideal for installation in or near busy rooms
Compatible with the tado° thermostat and appFull control of your heating from anywhere and ensures utility bills stay low
5-year parts and labour warrantyConfidence and peace of mind
10-year warranty upgrade when installed by a Viessmann trained installerAdditional peace of mind

Our Honest Opinion of the Viessmann Vitodens 100-W Combi

The Vitodens 100-W Combi is one of Viessman’s most popular boilers, and we can see why. It’s reliable, energy efficient and incredibly easy to use, not forgetting the impressive fuel savings it can achieve. It also comes with a load of installer-friendly features to keep installation simple, as well as front access to the components to make life easy for your service and maintenance engineer.

On top of all that, the boiler has received excellent customer reviews for reliability, and Viessmann were the winners of the Which? Best Boiler Buy in 2017. Having considered the advantages in detail and the fact this model comes with a lengthy warranty with an option to extend, we think the price point is more than fair for the Vitodens 100-W Combi.

Advice on Boiler Quotes and Gas Safe Engineers

When obtaining Viessmann Vitodens 100-W Combi quotes, we recommend you shop around and contact a number of boiler suppliers and installers so that you can compare prices and find a great deal. You also need to make sure that your chosen installer is Gas Safe registered and fully qualified to work on your gas boiler before allowing them into your home. You can find out the qualifications and registration status of an engineer by taking a look at their ID card or checking the official Gas Safe Register online. If you haven’t the time to do any of this, please don’t hesitate to use our free service to receive no-obligation quotes from reputable companies and Gas Safe installers in your area.

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