Veissmann Vitodens 100 Reviews

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Veissmann Vitodens 100

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Latest Reviews

★★★★★

“Use Viessmann Trained Techs! ”

Written on: 12/09/2017 by Hoffman13 (1 review written)

I've installed over 30 of the Vitodens 100's and a few 200's (and viessman oil boilers) over the last 8 years. I have had very little installation issues or call back complaints. Recommend the low loss headers, and a quality air separator. Also check water quality and use cleaner/conditioners (authorized by Viessman) especially if this is a replacement. Setup or check combustion with quality certified equipment. Remember any product can have issues but many of my findings in the field come… Read Full Review

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★★☆☆☆

“Cracked heat exchanger”

Written on: 25/05/2017 by Petery997 (1 review written)

We have had a vitodens installed in a small 10 unit apartment. Ran fine for the first 5 years no real maintenance other then an annual service. However in the last 2 years we have had to replace the motherboard and a secondary board at a cost of cad1,000 approx. Now the stainless steel heat exchanger is cracked and obsolete so no replacement is available. The upshot is another boiler. They recommend a Vitocrossal cu3a. Sounds like a roll of the dice. Being so expensive you would expect a… Read Full Review

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★☆☆☆☆

“Save yourself the stress- stay clear!!!”

Written on: 18/05/2017 by yzChase205 (1 review written)

Bought this boiler in 2014 based on the installers recommendation and we have had more problems with it than we had in the 10years of our old boiller. In the last 6 months , this boiler has broken down 3 times due to dirt in the system. The last time we were advised to power flush the radiators which cost about £350 but guess what, we have no hot water again! Another blockage due to dirt. Engineers really need to stop recommending this product .. our installer with years of experience is as… Read Full Review

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★☆☆☆☆

“Avoid!”

Written on: 10/05/2017 by Turner467 (1 review written)

Had this boiler fitted and constantly had issues that at first were corrected under warranty. They then decided to void the warranty claiming it must be a fault in our system of radiators. We have spent £100's or repairs and now face a £500+ bill for a manifold. We have decided it's time to just rip it out. I'm disgusted with not only the poor quality of the boiler but also the customer services. Avoid at all costs is my advice… Read Full Review

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★☆☆☆☆

“UTTER RUBBISH STEER WELL CLEAR”

Written on: 25/03/2017 by CasonPerry (1 review written)

Installed Jan 2008, So called state of the art, Has never completed one year without fault. Most years plumber called 2 or 3 times. Reading other reviews I see that we all suffered identical breakdowns and faults so, Viessmann, do not blame the fitters. Serviced annually only to be followed several weeks later by another breakdown. Was repaired,again, three weeks ago.This morning it has "died" again.Plumber advises " a new motherboard £500!! The most unreliable,costly item I have ever come… Read Full Review

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★★★☆☆

“Failed after 6 years”

Written on: 09/03/2017 by Helia (1 review written)

I'd a 5 year g/tee. Year 6 the "bladder" failed so no heating for more than a week as the part is not held in the UK & has to be imported. Will cost me well over £300 for plumber to replace. I was sold the boiler as being "state of the art" and cheap to run: but had not reckoned it would fail after 6 years. So I am very disappointed that it hasn't lived up to my expectations. Friends who have had similar combi-boilers installed have had no problems over 10 years +. My previous Potterton… Read Full Review

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★★★★★

“Been through 8 Winters no issues”

Written on: 07/02/2017

Had this boiler installed winter 2008 whilst building a very large extension to my property. Services new plumbed rads (8) and underfloor heating to new build and (12) old rads to existing along with heating my hot water. Never had any problems with the boiler (professionally installed, regularly serviced). My bills are very low in relation to the size of my property. No complaints only praise as its on 24/7 365… Read Full Review

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★★★★★

“Not a single problem in 5 years”

Written on: 03/02/2017 by 9McGuire (1 review written)

Had this boiler installed for my self build and have been running it for over 5 years without a single issue. It's running hot water, radiators on one floor and under floor heating on two floors. Make sure it's installed by someone truly competent and of course keep it serviced. My bills are far lower but this is probably as much due to the new house construction as to the boiler… Read Full Review

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★☆☆☆☆

“Not at all impressed”

Written on: 14/01/2017 by Koenl395 (1 review written)

Not long after moving into our property we have had our boiler break down on Christmas eve, Due to the time period we were without heating till the start of Jan. The heating and hot water just stopped. No faults came on the system and our heating engineer advised a new motherboard, which was fitted. At first it still did not work again and baffled the engineer, who did in the end get it working after several phone calls. All was well for 10 days and the fault has now came back again. So cold… Read Full Review

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★☆☆☆☆

“Reliably unreliable”

Written on: 24/11/2016 by conductivity (1 review written)

About the only thing you can rely on is that it is going to let you down. Regularly. Repeated faults, where it just refuses to flame up - and this is definitely the boiler's fault, not the thermostat or water pressure. One frequent failure is "F5", which is reputed to be due to a flap in the air circuit sticking. The flap seems to be totally unnecessary but we are not allowed to remove it. Don't buy a Viessmann - anything else must be better. … Read Full Review

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Bethvie's Response to conductivity's Review

Written on: 25/11/2016

Hi there, thanks for taking the time to review this product. Can we ask that you ask your engineer to contact our technical team, where we will be more than happy to help you with this issue. Thanks, Beth - Viessmann marketing team

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Johncbs's Response to conductivity's Review

Written on: 06/12/2016

Hi I am a viessmann specialist the model you are speaking of must be the wb1a, that means the boiler is 8 years plus. I am surprised you are getting this fault as the flap was removed or modified 6 years ago. Obviously no viessmann specialist has seen that boiler for 6 years plus. That could be more the issue.

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★★★★☆

“Viessmann Vitodens heat only boiler”

Written on: 22/05/2016 by Lardy1uk (4 reviews written)

We have installed over 100 of the Viessmann compact heat only boilers & have had one failure which was a duff combustion fan, this was dealt with promptly by Viessmanns own in house service engineer. This boiler uses there own designed & manufactures Inox-radial stainless steel heat exchanger which has a 10 year warranty. It should be noted that this heat exchanger is a "Full stainless steel" heat exchanger & not a cheaper (?) "Composite and stainless steel" heat exchanger as used by other… Read Full Review

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Salim786's Response to Lardy1uk's Review

Written on: 25/06/2016

Yes, I agree with your above views on the materials used in the combi boilers, I did enquire about this with viessmann, prior to getting 5 boilers fitted, and they assured me as to the longevity of the components/reliability of the boilers, 5years on and no problems to report, anyway most boilers brands use the black plastic water housing, hence me purchasing viessmann, incidentally this same material has been used for over 20years in cars successfully and only cracking or leaking after 10+years , hope this helps!

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★★★★★

“Fab”

Written on: 08/05/2016 by Websterlv1970 (1 review written)

Far superior than any other boiler, if you have a Viessmann installed by an accediated Viessmann installer you will be offered an extended warranty for ten years. I have had my current boiler for three years, my gas bill reduced considerably after I had it installed. It his boiler knocks the socks off my last boiler… Read Full Review

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★★★★★

“No problems :)”

Written on: 29/04/2016 by LesterBailey (3 reviews written)

Three years ago I moved into a house with a Veissman boiler and have had no trouble with it whatsoever. It's easy to use, good controls and everything's very logical. I had the boiler checked and serviced before the winter really started - the maintenance guy gave it a thorough going over and replaced something small which didn't cost very much. The boiler has worked well again over the winter, keeping the house warm. This is a great boiler - compact so it doesn't take up laods of space and… Read Full Review

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★★☆☆☆

“Problem prone”

Written on: 11/04/2016 by Hudsonp52 (1 review written)

Bought house with 4 year old Veissmann 100 boiler and have owned for a further 5 years. Heat exchanger prone to blockage so plumbers have to remove and acid treat every couple of years. Pressure relief valve failed, internal expansion failed, mystery losses of system pressures. Plumbers seem to love them (either due to easy maintenance or constant stream of work). Wish I had a Bosch Worcester… Read Full Review

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Jpine's Comment

Written on: 13/04/2016

You wouldn't want a Worcester ! More blocked heat cells & plate heat exchangers than they know what to do with. Ask any of there service engineers. To be fare as you have found out any boiler will block if connected incorrectly to a dirty heating system. Its not the boilers fault but the idiot installer !

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Machbow's Comment

Written on: 25/11/2016

Since writing this review the Vitodens boiler has stopped supplying central heating altogether. Plumbers don't want to look at - only replace. not sure what is wrong possibly control board failure, blockage or outlet valve. Have decided to replace to get away from Veismann unreliability.

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Magicmarklukeandjohn's Comment

Written on: 25/11/2016

Re-pressurising the internal expansion vessel is a task during annual service. If the boiler isn't being serviced annually or the cylinder not being pressurised then the symptoms Described above will occur. These are maintenance related and not product quality issues.

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★★★★★

“Excellent boiler, excellent value”

Written on: 09/01/2016 by ImmanuelBishop366 (1 review written)

Have had our Vitodens 100 for 2 years now and could not be happier with it. It runs so quietly it is remarkable. Very efficient, I reduced my heating costs to less than half what I paid to run my old oil fired boiler. Also should mention that the physical size of the Vitodens is very small, compact. I gained a whole new room when I got rid of the old boiler. To me, the only downside might be the initial cost - it is not cheap by any means. Wish I had added the DHW Combi unit at time of install… Read Full Review

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★★★★☆

“Well engineered quality boiler ”

Written on: 17/12/2015 by Salim786 (1 review written)

I'm just finishing the installation of my third viessmann 100 boiler, and am very impressed with the performance of the boilers, the first one is nearly 5years old now and has been absolutely superb and reliable,and impressively quiet, it's in a studio flat and cannot be heard at all in operation and heats all the rads hot in less than 5 minutes , once heated it modulates down to a whisper quiet tick over, the gas bill has dropped around 50% compared to the previously fitted Worcester Bosch… Read Full Review

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★★★★★

“fantastic ”

Written on: 07/12/2015 by ecConrad166 (1 review written)

Running the 26kw model, being used in a family home now 4yrs , no services either it's quite ,smart looking and well built. Fit these and forget… Read Full Review

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★★★★★

“Veissmann 100 closed system boiler - all good”

Written on: 21/11/2015 by ldWilliams330 (1 review written)

We've had this boiler for two years without a problem - although the wireless thermostat (standard version) is not the easiest to use or understand . The benefit of this boiler - closed system- is that everything is contained in the boiler itself- we had a pressure cylinder 'megaflow' installed recently for the loft conversion and the plumber was surprised that we didn't have an external pump etc that is usual with the Bosch systems, Everything was installed smoothly and the boiler works well… Read Full Review

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★★★★★

“Very Impressive Boiler”

Written on: 21/10/2015 by HULLASH (1 review written)

Vitodens 100-W 30kw I was a little sceptcal about this combination boiler after reading many poor reviews on this site, however this as been installed for 14 months and i'm very impressed with the efficiency of the boiler, helping drive my gas bill down to only £65 a month (3 bed semi) The boiler was installed onto a newly piped system a mixture of copper and plastic pipe. A scale inhibitor and Magnaclean filter was installed and the full system cleaned by a powerflush. The gas pipe had to… Read Full Review

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★☆☆☆☆

“Waste of money”

Written on: 20/10/2015 by sophiejo1 (1 review written)

I have lost count, in the six years since I have had this boiler, how often I have had to call out a plumber because it has simply cut out. It has just cut out again tonight, for no apparent reason: I had it on all day, then suddenly felt cold. The radiators were stone cold. Once again, it has lost pressure. Now I am without heating or hot water -- again. No amount of complaining to the Viessmann has drawn a response, so I have ceased to pursue that line. I am looking forward to throwing this… Read Full Review

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Heat247's Response to sophiejo1's Review

Written on: 07/11/2015

You are associating this fault with the boiler but the boiler is correctly going into safety mode to protect itself from damage. Pressure loss is usually a problem with leaks elsewhere on the system, if these leaks are not obvious ie. radiator valves and visual pipework then it may be under flooring or behind studded walls. Replacing the boiler will not resolve this and you need to get a tradesman willing to help you find and resolve these leaks. I have been fitting Viessmann boilers for many years and very rarely have any complaints from customers. I hope this helps and you save yourself the expense of fitting a new boiler unnecessarily.

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Sophiejo1's reply to Heat247's Comment

Written on: 07/11/2015

Thank you for your advice, Heat247. I am in a flat, so if there are leaks in my pipes, the people in the flat under mine would be complaining. In any case, my plumbing was entirely new, put in specifically to accommodate the Viessmann.

There is one hope, though: My present (Viessmann-trained) plumber will raise the level of the taps that serve the boiler. (At present those taps are close to the floor, and behind my very heavy washing machine. So I cannot get at them.) He tells me that simply turning the taps off when pressure fails, then back on again, will get the boiler started.

Anyway, I am heartened by your opinion. Thank you.

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