Which? Best Buy

The Viessmann Vitodens 111-W was first awarded Which? Best Buy status in 2017. And the Vitodens 111-W’s Best Buy status was first awarded based on feedback from 219 registered Which? Trusted Traders, heating engineers and 9,610 domestic customers.

This feedback covered the experiences of the boiler owners and the views of the installers regarding the ease of servicing, fixing a common fault, availability of parts and spares, build quality and recommendations.

Integrated Wi-Fi

Launched in April 2021, the new Vitodens 111-W notably now has integrated Wi-Fi. This, along with the 111-W’s new control platform, makes monitoring, commissioning and servicing the boiler easier. From an engineer’s perspective, this means that they can now monitor and adjust customers’ boilers remotely using the Vitoguide software.

When using Boilerhut for your installation we work with you to connect your boiler to Viessmann’s systems. We can then monitor that boiler and receive notifications of any issues that may occur. We’ll then work with you and Viessmann to ensure your boiler is fix as soon as possible.

For the engineer, the compatibility with Vitoguide also makes commissioning the boiler easier. It provides a step-by-step guide covering time programmes, heating circuits, heating curves, DHW and the circulation pump.

For the end-user, the integrated Wi-Fi means that the Vitodens 111-W is fully compatible with the battery-powered, RF-connected ViCare Thermostat and the new Vitotrol 100-E smart thermostat. This means that the boiler can not only be controlled using the boiler’s large touchscreen, but it can also be controlled using the Viessmann app on a smartphone or tablet – all without the need for third-party controls.

The ViCare app provides the Vitodens 111-W with the following functionality:

• Information on the current operating status
• Quick adjustments to the heating system
• Time programmes for heating and hot water, by zone

Reliability

Viessmann, the manufacturer of the Vitodens 111-W, is renowned for its reliability and the quality of the components housed within the boilers it manufactures. All of the components utilised within the Vitodens 111-W are designed and manufactured by Viessmann in-house and designed to work together for maximum performance and reliability.

The reliability of the Vitodens 111-W has been commended by Which?, with the boiler receiving a Which? ‘Best Buy’ award from 2017 to 2019.

Super Quick Hot Water

The Vitodens 111-W offers rapid abilities and one of the highest draw-off rates of boilers currently on the market.

It can fill a standard bath in just eight minutes whilst also supplying a sink or washbasin simultaneously. Alternatively, it can supply hot water to three showers for up to 15 minutes.

Highly Efficient

Thanks to Viessmann’s patented stainless steel Inox-Radial heat exchanger, the Vitodens 111-W offers exceptional efficiency of up to 98%. This is due to Inox stainless steel having a maximum of 1.2% carbon and a minimum of 10.5% chromium content, efficiently converting the supplied energy into heat whilst consuming lower amounts of fuel, emitting lower CO2 emissions and having less impact on the environment.

This technology creates a furnace-like environment inside a small space. It increases the heat exchanger’s resistance to staining and corrosion, which significantly extends your boiler’s lifespan and contributes to higher savings on your annual energy bills.

Aluminium heat exchangers, which are utilised in many other boilers initially offer slightly higher thermal conductivity but the efficiency will degrade dramatically over time due to the material being prone to corrosion.

Flexible

One of the initial advantages of the Vitodens 111-W over the competition is the flexibility of where it can be located. Unlike storage combi boilers from competitors such as Worcester Bosch, which are floor-standing, the Vitodens 111-W is instead wall-mounted. This is a great plus point as it saves on floor space and allows you to utilise unused wall space.

It also potentially allows you to upgrade from a standard combi boiler to a storage combi boiler in the same location. This will reduce the need for new water and gas pipes throughout the property.

Space-saving

Due to having an integrated water cylinder, the boiler offers space-saving abilities. It means the unit is housed in one location without a hot water cylinder needing to be installed elsewhere. As everything is housed all in one unit, it also means that you can be confident that you are just dealing with one manufacturer. Plus, with a warranty of up to 10 years available, you can be sure that you will have 10 years with no issues associated with any of the components of your boiler.

Super Quiet Operation

At 49 decibels, the operating noise levels of the Vitodens 111-W are quiet. To put this into perspective, it operates with noise levels that are only marginally louder than those of an A-rated fridge. Due to this, this boiler is quiet enough to be installed in a bedroom with no danger of disturbing your sleep.

Where can you install the Viessmann Vitodens 111-W?

At 950mm (height) x 600mm (width) x 500mm (depth), this isn’t a small boiler. Due to this, you must ensure you have the correct location to install this boiler. Suitable installations include kitchens, utility rooms, garages and airing cupboards.  If you intend to install it in an airing cupboard, you should measure the space available to ensure it will fit.

Measuring correctly is crucial, as not all spaces are large enough to meet Viessmann’s recommended installation guidance, you will also need to ensure clearance is available to the top, bottom and sides. Get a quote with Boilerhut and we’ll call you to discuss this further.

As it weighs 110kg when filled with water, it isn’t a light boiler either. Again, you must consider where this boiler will be installed, as you will require a solid or other suitable wall.

Water flow rate 

To ensure you are choosing the most appropriate boiler for your specific application, we advise that you check your cold water flow rate before choosing this boiler. We recommend that you have a cold water flow rate of 20+ litres per minute; you can check this by timing how long it takes to fill a 5-litre bucket using an outside tap.