Veissmann Vitodens 100

The boiler is noisy when starting up and running - the manual timer fitted to the 100 is also irritating due to the constant fast ticking noise. The manual timer does not allow for setting different times on different days. The boiler’s eco settings can cause the radiators to be warm even though the hall thermostat is set to the absolute minimum. Other reviews have mentioned this also happens with overriding individual radiator thermostats but I’ve not tested for this. The model has had issues in the past and they now recommend copper pipes being fitted on installation. Personally I’ve been unimpressed with this boiler since installation. I’ve given it three weeks since the install and I will now either sell the property or scrap this one and fit another brand that I’ll be happier with. The performance of the 100 for my 3 bed property is very poor. It has a 10 year guarantee of which one month has expired. The guarantee doesn’t seem to mean much and who knows how much longer Viessmann will be around as a company to honour it if required. Avoid. Don’t risk buying. If I see a Viessmann boiler fitted in a property I’m considering buying I’d factor in changing it to another model. Don’t waste time and energy on something that’s not worth the trouble.

Had this boiler fitted 5 weeks ago has gone off twice in two days and failed. The worst thing is the Engineers don't work weekends. Now British Gas they work 7 days a week and prioritise the elderly and disabled. This company can't even be polite when you finally get to speak to them three times I tried Sunday first numpty that answered asked me to hold them kindly cut me off,second time nobody answered guess he was busy having coffee third time took the details said someone would be in touch Monday another story. All in all a chap boiler fitted by a bunch of xxx as expected with German engineering overpriced rubbish!!!!!

We spent over $8000 installing this boiler 5years ago, called the company for installer. 3year ago it broke down, this year it did again, changed the control panel for $2600 on January 25th, it broke down twice already. It was a bad investment and it poses a potential damage to your home.

we've had a Viessmann Vitodens 100 for eight years and every year it gives us problems. This year it's constantly registering F9 fault. I had my plumbing-heating contractor/installer look into this 3 times this season. He has even called Viessmann technical support and even they couldn't figure out what is wrong. I'm convinced this product is a lemon. We used to have a Burnham boiler for 20 years and never a problem, only yearly maintenance was necessary. I miss it. anyone wanna buy a used Viessmann boiler?

Viessmann 100 WB1B 4 years old and have now been told main exchanger is up the wall, not fun witn three children

Nothing but issues over the 4 years AVOID AT ALL COSTS..

Now having to find the money to get a replacement.

Thanks viessmann....my last boiler was over 20 years old

We've had this boiler for nearly 9 years. First new part just after 2nd year, and even though it's serviced every year, we've had same part(bladder) renewed every two years! We have now just been quoted for a small part that has cracked so boiler leaking. The cost is over £450 plus vat and labour. So have nearly paid for this boiler twice. Time for a new one!!!

We have the misfortune to own veissman vitodens 100 and t is the worst thing we have ever owned, it constantly has problems from the clock not working through leaky taps and washers to simply just not working. It first really failed "Just after the warranty ran out" and that was 5 years ago, we have never had proper service out of the boiler and the company just wants to charge exorbitant call out fees to even come and look at it.

Veissman are without a shadow of a doubt the worst boilers and company ever, we are going to replace it with a Worcester boiler next. It would have been nice to know nhow bad they were beforehand

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 back to installation. Follow manufacturer recommendations and true of any brand, hire a company who has actually been to a class for the brand they are installing.

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 little more durability then the 13 years it lasted!?

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 disappointed as us.. you might have a few happy customers but overall just a scrappy piece of work .. my advise is to avoid this product!