Vaillant GmbH Arvostelua 

Hours on the phone from one person to the next, impossible to speak to customer service. I need access to my account to update email address. Was given two email addresses to request full access to my account both were returned undelivered. Why is it so difficult to get hold of the right people in Valliant to help me? Still no success.

I bought 2 vaillant boiler, they not working properly, one of themhas problem from installing date.
The company glowgreen installing both boiler, and registered for 2 years warranty instead of minimum 5 years warranty!!!!!?????

Seit 22 Dezember 2024 funktioniert unsere Heizung nicht mehr, wir bekamen bereits 2 Termine zur Reparatur die aber jedesmal abgesagt wurden von der Firma weil das Ersatzteil noch nicht da ist! Nächster Termin 8.1.25...also insgesamt 18 Tage ohne Heizung....im Winter....

We had boiler broken. The insurance company sent Vaillant to do the repair.

The engineer came without any clue on repair needed. He then told us I can't fixed as a manager authorisation is needed to complete the repair!. He left without doing anything. now after 10 days we have no heating and no hot water in very coldy weather.

This company is totally corrupt. Refused to repair a brand new boiler only 10 months old. Criminals.

I have had superb support and help from Mr George Lightbody, Regional Manager. His professional care has been second to none. I have had ongoing boiler issues and he has always been there for me at the end of a phone line to offer advice.

2 year old Glowworm boiler broke down 3 weeks ago.Told engineer would come on 29th, no time given.
so I cancelled everything to be in. He arrived at 4.55!
New part needed. New Appointment given for today, no time slot. Called this AM after 10 min wait was told i had been cancelled. Not by me and not informed of this. New appointment made for today as there was availability. Stayed in all day. Called again at 4 but was told engineer had cancelled. Not informed of this. Another day wasted. Interesting to see if new appointment next Wed 18th will be another wasted day?

This is the worst customer service I have ever received. If you call no one will answer, when you do get through to someone they are unhelpful and rude. If you are looking for a new boiler, do not use Vaillant! Seriously, DO NOT USE VAILLANT!!

shit boiler and even worse costumer service boiler installed in summer broken in november and they will come after 5 days to check when there are two children and a 80 year old living in the property

Customer service is shockingly bad. Takes a long time to get a through, I was then cut off and had to wait another 10 minutes to speak to someone else. Offered me a boiler service the following week but I was not available, next date they had was 3 months away. I suspect appointments are being held for customers who have paid for an expensive maintenance plan so I am taking my business elsewhere. If I ever need to replace my boiler it will not be one made by Vaillant due to the terrible aftercare

Alles. Kann nicht empohlen werden

Une chaudière neuve haut de gamme avec un thermostat pourri qui met en panne la chaudière et qui ne fonctionne plus a cause d un changement de pile digne d un produit chinois à 2€ pièce en plastique de très bas gamme Coût du devis de réparation 498 pr un morceau de plastique de 2mm d épaisseur et 3cm de long....du vol
J aimerai mettre la photo de la pièce cassés sur le site

this company are absolutely awful, we had a brand new all singing all dancing eco tec 635 boiler fitted, but from the word go, there have been huge banging and crashing coming from it, shaking the whole house and absolutely terrifying when it first happened at 03.00, countless Vaillant engineers visits (most of which are disengenous to say the least, and all blaming the installation engineer for what is causing the explosive ignition!!!! if not one thing then another, the installation is 100% correct, parts have been changed here and there but no change, there is no way to speak to anyone at Vaillant about this, automated system.... it all started in March 2024 and is still going on..... with nothing at all being resolved

Tried to speak to someone regarding getting my boiler serviced, you cannot actually speak to anyone, all the lines are automated, I needed to ask if the engineer could call me half a hour before attending or give me an ETA as I don’t currently live at the property it’s a building site, with no power, toilet, furniture, I’m expected to stay there for a 6 hour window (PM - 12-1800) it’s a joke!

Although the products are well made, woe betide if you have any issues with them or their 'approved' installers. We have a Vaillant Air Source Heat Pump which, according to their latest service engineer's visit, was not installed correctly. Despite the installer being listed on their own website as a 'Renewables Partner', and proudly displaying 'Vaillant Accredited Installer' and 'Vaillant Approved Installer' on his website and vehicles, neither he, nor they, will take responsibility for the issues and put them right. During a call to the Vaillant helpline their operative described accreditation as being 'like wearing your favourite team's football shirt'!! I am still awaiting their latest response so this review may need updating if anything changes...

Vaillant advanced Installers get no back up. Can’t recommend Vaillant anymore.

I am absolutely appalled at the way this company is treating my 84 year old mother . She had a boiler fitted with the company 2 years ago . After 2:weeks we noticed the pressure on the water kept going down . Engineers have come out and simply raised the pressure . They are saying that the pipe underneath the boiler is nothing to do with the boiler itself . How can this be. They fitted the boiler for quite a few thousand pounds so they obviously fitted it wrong . They simply won’t do it for my mother as it’s not inside the boiler but he pipe . It’s quite obvious that they cut corners when they fitted the boiler for a large amount of money . Just not on . The pipe is coming from the boiler and it’s leaking . It would be far better and more cost effective that they repair the pipe rather than we get someone out all the time . And to top it all they ave now decided to charge my mother £98 for the call out 5is morning because the pipe is outside the boiler. If you take the pipe away from the boiler the boiler will not work so why isn’t this pipe under the same warranty as the boiler itself . Shame on them all . They simply do not care

With a air source heat pump installed it brilliant, in 6 weeks it’s worked once , avoid at all costs

Gewoon een schande. Ik hang al voor de 2° keer deze week meer dan anderhalf uur in de wacht.....

Had a brand new boiler and system put in 3 years ago. Had the annual services required to honour the warranty and for the second time in three years the boiler has broken down. The second diverter valve in three years and I was very sure a leak was coming from boiler a year ago. I was ensured by yiur engineer that it wasn’t. Lo and behold a year later it happens again and it took two visits to sort the problem. Made a complaint to customer service and no response. As a result of having problems with a previous boiler and so called inferior make and model I invested in a valliant. It’s been nothing but trouble and I wound t recommend. A quality boiler breaks three times in two years? I have to call three times and waste two days off work to sort a problem? As a result my worktop is damaged from constant water dripping. I was informed that if the water quality of my system was ooor that valliant does not take responsibility for the damage. Such nonsense and another way to get out of sorting tbe problem. You pay the value of the boiler n annual services and when something goes wrong they find a way to put the cause back on you so called high quality Getman engineering? I don’t think so. Plus a customer service line that you have to pay for and wait for 30 mins to speak to someone.