Viessmann Vitodens 100 Combi Review

Viessmann offers some of the best new combi boilers in the UK, with one of their most popular being the Vitodens range. Today, we’re going to review the Viessmann Vitodens 100-W combi boiler in detail, so you can decide if this is the right boiler for you. 

In this review we’ll cover: 

• A quick summary of our Vitodens 100-W combi boiler guide
• Which properties the Viessmann 100 is suited to
• How much you should expect to pay for your new boiler installation
• The most important features of the Viessmann Vitodens range

In Summary: Viessmann Vitodens 100-W Combi Boiler Review

The Viessmann Vitodens 100-W is one of the most reliable, popular and reasonably priced boilers on the market today. 

The range includes a 26kw, 30kw and 36kw. This means anything from a 1-bedroom property with 1 shower up to a 4-bedroom property with 2 showers will be suited to the Vitodens combi boiler. 

The most important features include: 

‍

• Long 10-year warranty
• Robust stainless steel heat exchanger
• WiFi compatibility
• Power modulation
• Compact design
• LPG & hydrogen compatible

Typically, you should expect installation costs to be in the region of £3,000, although this varies from property to property. 

Our boiler quote tool here will give you Viessmann boiler prices on screen, as well as suggesting the most suitable kw output for your property.

Types of Properties The Vitodens 100-W is Suitable For

The Viessmann Vitodens 100 range includes 3 different models:

• Vitodens 100 26kw
• Vitodens 100 30kw 
• Vitodens 100 35kw

This means the types of properties that the Vitodens range of boilers are suited to is quite wide. 

Typically, a 26kw combi would be fitted into smaller properties. The spec of a property suited to the 26kw combi boiler is likely to be something along the lines of: 

• 1-2 bedroom flat, apartment or small house
• Maximum of 1 shower
• Up to 8 radiators

For those living in bigger property (by sq ft) with half a dozen more radiators but still only 1 shower, the 30kw is likely to be more suitable. 

Finally, you have the most powerful boiler in the range, being the Vitodens 100 35kw combi. Generally this would be fitted in a larger 3-4 bedroom property that has more radiators, as well as up to 2 showers. The 26kw and 30kw wouldn’t be able to keep up with demand for 2 showers at once so wouldn’t be suitable in this case.

This is never a one size fits all approach. Every property is different in terms of:

• Square footage
• Length of heating pipework
• Amount of bathtubs and separate showers
• Amount of radiators
• Insulation
• Additional work required

All these variables affect the overall hot water and central heating output your property needs, the type of boiler, complexity of the job and therefore, the overall cost of installation.

If you’re not sure which Viessmann Vitodens combi boiler is most suitable for your property, you can use our clickable boiler pricing tool here. 

Tell us a few specifics and our quotation tool will offer up the most suitable Vitodens 100-W combi boiler for your property, as well as a fixed price on screen inclusive of installation. 

Viessmann Vitodens 100 Boiler Installation Costs

A new boiler is a huge expense, which varies a great deal from property to property. There are a huge amount of variables that contribute to the overall cost including:

• The size Vitodens boiler you need - The price difference from the cheaper 26kw Vitodens is around £200 less than the most expensive in the range, the 35kw Vitodens
• Additional work required - If you’re looking to have your boiler relocated and choose to have optional extras fitted such as smart thermostatic radiator valves or smart heating controls, this could add on 100s to the overall price
• Gas Safe compliance - For older properties, pipework may need to be upgraded to fall in line with Gas Safe standards which obviously means further costs

As an estimate, Viessmann boiler prices including installation tend to sit around the £3,000 mark. 

However, if you want to get exact prices on a range of combi boilers, you can use our clickable boiler installation tool here; it takes approximately 2-minutes to complete (no email or phone number required).

Top Features

We all know German engineering is among the best in the world, which is why we see brands such as Viessmann leading the way in the combi boiler industry. 

Below are the most important features of the Viessmann Vitodens 100 combi boiler range.

Huge Warranty 

Whether we’re writing guides covering the best boiler brands or installation costs, we always stress the importance of a long warranty. Ultimately, a long warranty on boiler components could save you having to replace your boiler, or expensive repairs.

A lot of cheaper brands offer units which could save you £100-£200 on the overall cost of an installation. However, usually the warranty on offer here is small, somewhere in the 2-5 year range. 

At Dwellow, we choose to only fit boilers with a 10-year (or longer) warranty, which is exactly what you’ll get with the Viessmann Vitodens 100-W. You can check the cost of a Vitodens 100 with a 10-year warranty here. 

Stainless Steel Heat Exchanger

Heat exchangers are one of the most important components in a boiler, but are also one of the most expensive. And, there’s certainly no expense spared from Viessmann’s side when it comes to the heat exchanger in the Vitodens combi boiler range. 

All Vitodens 100-W combi boilers come with a stainless steel heat exchanger, which lasts a lot longer than a typical unit. Not only does this mean your boiler will be more reliable, it means it will last longer too. 

WiFi Compatible (ViCare)

The Viessmann Vitodens range comes complete with WiFi compatibility, meaning you can control your heating and hot water remotely using their app. 

However, to get the most out of this feature you’ll want their additional extra, being the ViCare Smart Thermostat.

Power Modulation

It goes without saying the 100-W combi boiler is A-rated, providing a much higher level of efficiency compared to your old boiler, and huge energy savings. 

One of the biggest ways the Vitodens 100-W combi saves energy and money is via power modulation. Instead of running at maximum capacity every time you demand heat or hot water, it modulates power to best suit demand. 

Power can be modulated at a 1:10 scale, minimising wasted energy.

Compact Design

Building a reliable and efficient boiler into a compact design isn’t easy, but that’s what Viessmann have managed to do with their 26kw, 30kw and 35kw combi boilers. 

Put simply, this means you’ll be able to install the Vitodens 100-W in small spaces, such as a wall-hung kitchen cupboard.

LPG / Hydrogen Compatible 

Unlike a lot of combi boilers, the Viessmann Vitodens 100-W isn’t just limited to running on gas. 

Whether you’re installing the 26kw, 30kw or 35kw, all units can easily be converted to run on LPG, or, a blend of 20% hydrogen!

‍