Dozens of people in the UK have now heard of Viessmann. Here's why... 📣
Who are Viessmann? A brief review...
Viessmann make boilers. Very good boilers.
From a consumer point of view, that’s the short answer and the minimum - and possibly maximum - information required.
But for research and reassurance, we’ve gone into alarming detail below on each of their boilers and why Viessmann are relentlessly strengthening its grip on the UK boiler market.
Side note: Heatable are the largest installer of Viessmann boilers in the UK - if you want a new boiler, you’ll be just fine grabbing one from us. A local expert could be massaging it onto your wall tomorrow 😍
Viessmann Combi boilers
Q. Combi Boilers - Woah, wait – what even is a combi boiler?
A. The UK’s most popular and – in most cases – most efficient boiler, requiring no cylinders or water tanks and providing instant hot water and heating to your radiators. It’s the pinnacle of heating & hot water.
A crucial read for a newbie; Best Combi Boilers.
Viessmann Vitodens 050-W Combi Boiler
Available boiler sizes:
25kW, 30kW & 35kW [2024 models]
Surely the most outstanding ‘entry level’ boiler in the world of heating. The 050-W is the perfect combi for 1-2 bathroom homes. Through Heatable, the Vitodens 050-W can be acquired with a whopping 10-year warranty at a staggeringly low price. Viessmann has described sales of the Vitodens 050 as similar to that of Range Rover sales to wealthy urban mothers.
We fit Viessman Vitodens 050's from just £2,200 (with monthly payment options), all over the UK, within 24 hours - Get your fixed price online.
We recommend you enhance your home with an 050 without further ado. But delve further into its world by reading this here article.
Viessmann 100 combi review
Available boiler sizes:
30kW & 35kW [2024 models]
With their Vitodens 100-W, Viessmann have achieved the near impossible in producing a sequel that can better the original. The 100-W – award winning again, of course – has improved upon the 050-W, replacing some internal rubber parts with a more sturdy copper and increasing the size and functionality of the boilers LCD display.
We fit Vitodens 100's all over the UK, within 24 hours - Get your fixed price online.
Outlay you wasn’t expecting? Pay monthly 🥰
Read more on the Which? Best Buy awarding winning 100-W here.
Viessmann Vitodens 200-W Combi Boiler
*Note, this is a super niche boiler for large homes.
Available boiler sizes:
30kW & 35kW
Completing a hat-trick of ‘Which?’ Best Buy awards, the Viessmann 200-W is Viessmann’s pride and joy, their beautiful monster, their Dragon Queen. Somehow balancing outstanding power and efficiency, the Vitodens 200-W is also remarkably quiet and boasts Viessmann’s best design including a colour LCD touch screen display that would’ve once qualified as a widescreen TV.
Viessmann Vitodens 111-W Combi Boiler
*Note, this is a super niche boiler for large homes.
Available boiler sizes:
30kW & 35kW
Constantly striving for bigger and more powerful boilers with an almost psychotic tenacity, Viessmann birthed the beastly Vitodens 111-W.
A combi boiler born of the unnatural and depraved coupling of combi & system boilers; the 111-W is a combi boiler that also boasts a built-in hot water storage tank.
The perfect solution for large family homes with regular and simultaneous demand for hot water.
Fancy treating your home to a V? Get your fixed price online.
Viessmann System Boilers:
Q. Stop. Wait. What is a system boiler anyway?
A. It’s a boiler with heating and hot water controlled separately – in addition to your actual boiler, you’ll have a pressurised hot water storage tank.
Read our Worcester Bosch vs Viessmann Boilers review if you want a helpful comparison of these trusted boiler manufacturers.
Viessmann Vitodens 100-W System Boiler
Available boiler sizes:
19kW, 26kW, 30kW & 35kW
The 100-W is a Swiss Army Knife of system boilers, offering a compact design with whisper-quiet operation, a stainless steel heat exchanger, a backlit LCD display and incredible efficiency.
We fit Vitodens 100's from just £1,995, all over the UK, within 24 hours - Get your fixed price online.
Viessmann Regular (open-vent) boilers:
Q. Hang on. What’s an open-vent boiler?
A. Well, it’s very similar to a system boiler in that it will have a separate tank for hot water but additionally will have a cold water storage tank, usually in the loft of the property where gravity feeds water to your system.
Learn all about combi boilers in our what is a combi boiler guide.
Viessmann Vitodens 100-W Regular Boiler
Available boiler sizes:
13kW, 16kW, 19kW, 26kW & 35kW
Everything you have now come to expect from a Viessmann boiler – reliability, low carbon emissions, a compact size, quiet operation volume, a backlit LCD display and their almost cliché ‘Which?’ Best Buy award to top it all off.
With the largest power output range, there’s an open vent Viessmann Vitodens 100-W for your home, no matter its size.
We fit Vitodens 100's from just £1,995, all over the UK, within 24 hours - Get your fixed price online.
Top reasons to invest in a Viessmann boiler
Massive warranties ☔
Boilers are the most used piece of equipment in UK homes. How often do you need heating and hot water? Exactly.
Having peace of mind that your boiler is protected in the case of breakdown – particularly in winter – is invaluable. Every Viessmann boiler fitted through Heatable comes with a 10-year parts & labour warranty as standard.
Amazing aftercare?
Should you need to call upon your boiler's warranty, it’s imperative that the service you receive is up to scratch – and fast.
Viessmann attends the vast majority of warranty calls within 24 hours of receipt, with no call-out charges.
German engineering ??
Ever the pioneers, you can rest assured that your new Viessmann boiler has been engineered to within an inch of its life, and then some.
Having honed their trade creating super-efficient industrial boilers, Viessmann’s domestic range has inherited the standards required to heat grand factories full of hard-working Germans.
Want an exact price of a new boiler? Use our boiler quote calculator (your fixed price will appear on the screen).
Ruthless efficiency?
Whether it’s genuine concern for the environment or just a ruthless competitive nature from the Germans, they’re doing everything they can to keep their CO2 emissions low and so in turn, your energy bills. Everyone one of their boilers is rated A for efficiency. Every. Single. One.
European domination ??
Viessmann boasts a mammoth turnover of 2.4 billion Euros. Thanks in large, to the European's adoration of their boilers. Europeans, renowned for their love of style and efficiency, consume Viessmann’s like they do wine.
Competitive prices – for now ??
Viessmann has been a sleeping giant in the UK for too long and has now embarked upon a mission to deliver incredibly high-quality German boilers to the domestic UK market, making its competitors look like Smart Price kettles. To warm to the money-savvy Brits – Viessmann is currently offering their superior boilers to consumers at incredibly low prices.
Top technical reasons to invest in a Viessmann boiler
Stainless steel heat-exchanger
One of the most vital internal organs of a boiler. Viessmann makes every one of their boilers with a stainless steel heat exchanger - a self-cleaning, boiler life-extending miracle that most Worcester boilers can’t bring themselves to offer.
Built-in shock arrestors
If your house has ever bellowed, whistled and creaked whilst your boiler is in use as though you’ve just started a game of Jumanji – it’s because your boiler doesn’t have a shock arrestor to stop this hell.
Viessmann boilers? Built-in.
Combined PRV & condensate pipe
The pressure release valve of your boiler and the condensate pipes will very often require two holes in the exterior wall of your boiler. Viessmann combined this into one hybrid pipe, meaning one less hole blasted through either side of your lovely walls.
Compact size
Viessmann has achieved the unlikely feat of encompassing all of their award-winning, eco-friendly magic into amazingly compact case sizes whilst some of their competitors are still struggling with Honey I Blew Up the Boiler disasters, bursting out the airing cupboards of disgruntled boiler buyers.
Weather compensation
Viessmann is fully aware that you don’t always have the mental resources to decide what temperature your heating should be at, or what is most efficient. This is why they offer a weather compensation device which cleverly compares the outside temperature to the ambient temperature in your home and adjusts your heating accordingly.
Smart tech compatible
Smart thermostats are ever more popular because releasing your gaze from an iPhone is the worst part of anybody’s day. Viessmann’s condensing boiler range is fully compatible with smart technology. Add on a Honeywell T6 smart stat at the checkout when buying your new Viessmann through Heatable.co.uk.
Super quiet
Having your boiler in a frequently used room, particularly a bedroom can be a nightmare if your boiler cries like a hyena when it’s operating. Viessmann boilers have internal case padding to reduce noise pollution.
Curious to know which boiler brand performed worst? Find out in our report of the worst boilers.
Viessmann boiler reviews
People review everything, usually to vent their frustration about how poor a product or service is. Rarely do us brits sing any praises, so prising positive reviews can be somewhat of a challenge.
Viessmann aren’t struggling at all.
Viessmann is smashing it.
Here's a quick snapshot of Viessmann boilers reviews from some of the top, UK review platforms.
Viessmann Truspilot Reviews
Rating: 8.4/10
Boiler is great - is working perfectly and operating quietly! Radiators definitely heating up faster than before
It's only been about 8 months since I've had the Viessmann boiler installed but no complaints so far, it is extremely efficient and very quiet, a big difference from the one it replaced.
Viessmann ‘Reviews.com’ Reviews
Rating: 4.51/5
Good, efficient boiler, nice and quiet with a long warranty for peace of mind.
Following the installation of my Viessmann boiler I have been more than pleased with the performance of this unit. It is quiet, very efficient and totally reliable.
Viessmann Boilers vs. Worcester Bosch
We’ll take a look at two of their flagship models, side by side.
Viessmann Vitodens 050-W vs. Worcester Greenstar 4000
The ‘entry level’ boiler of both manufacturers and by extension, their best sellers.
Viessmann 050-W 25kW | Worcester Greenstar 4000 30kW | |
Outputs | 29kW, 35kW | 25kW, 30kW |
Cost | £1,695 | £1,900+ |
Flow Rate | 12.3L p/min | 10.2L p/min |
Size mm | 707 x 400 x 350 | 710 x 400 x 330 |
Which? Best Buy | ✅ | ✅ |
LCD Display | ✅ | ✅ |
Efficiency | A | A |
Heat Exchanger | Stainless Steel | Aluminium |
Warranty | 10 Years | 5 Years |
The Worcester Bosch Greenstar 4000 has incredible sales numbers in the UK, but this – we think – is solely down to its brand name – Worcester.
When compared to any number of its competitors, it can be considered to be coming up short in numerous key areas, whilst still demanding a designer price, like a Primark t-shirt with an Armani logo.
Verdict: When it comes to the entry-level range here, there is only one clear winner. The Viessmann has the Worcester beat on all fronts whilst achieving a more competitive price too.
Viessmann Vitodens 100-W vs. Worcester Bosch CDi Classic
Two examples of more premium offerings from both manufacturers.
Viessmann 100-W 30kWWorcester CDi Classic 29kW | ||||
Outputs | 26kW, 30kW, 35kW | 29kW, 34kW, 42kW | ||
Cost | £2,195 | £2,400+ | ||
Flow Rate | 12.4L p/min | 12.3L p/min | ||
Size mm | 700 x 400 x 350 | 760 x 440 x 360 | ||
Efficiency | A | A | ||
Heat Exchanger | Stainless Steel | Aluminium | ||
Warranty | 10 Years | 10 Years | ||
Verdict: A much closer contest between two outstanding boilers you could never go wrong with choosing. In fact, we’ll only just give Viessmann the edge here on price and more compact size.
We have also reviewed and compared many other popular UK boiler brands, including the following:
Viessmann Boilers: Time to buy? 👩💻
You may need a new boiler.
You may need it fast, and with affordable monthly payments.
You may even need it from a company with top end local engineers, with 10,000 Trust Pilot reviews to back them up. Plus a Which? Trusted Trader award for good measure.
You may need a new boiler quote from us, Heatable 😘
