The person who came for maintenance was very rude. Did not answer questions asked properly. There was a centralized controller from Vaillant which is not cimminicating well with Boiler, when asked to... See more
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Had some problem with my boiler or almost 3 years old. The plummer who installed the boiler no longer does his job. Contacted directly the customer service at Vaillant. Within a week reply & fixing a... See more
Company replied
Telephone contact was as you would expect from a professional service. Friendly people on the other side. Appointment was fixed in 4 businessdays, which is to be expected when it's winter times.... See more
Company replied
Excellent service. The technician was very friendly, professional, and communicated clearly throughout the entire visit. He explained every step, discussed possible issues, and gave helpful tips to av... See more
Company replied
Company details
- Boiler and Heating Service
- Boiler Manufacturer
- Furnace Repair Service
- Heating Equipment Supplier
- Technical Service
About Vaillant Belgium
Written by the company
Vaillant is een Duits merk en al meer dan 150 jaar een toonaangevende Europese marktleider in verwarmingstechnologie. Het bedrijf ontwikkelt toekomstgerichte, energiezuinige en duurzame oplossingen die inspelen op de behoeften rond comfort, verbruik en efficiëntie. Vaillant biedt kwalitatieve, betrouwbare en milieuvriendelijke systemen voor verwarming, koeling en warmwatercomfort. Het productportfolio omvat warmtepompen, condensatieketels, slimme thermostaten en airconditioningsystemen. Daarnaast ondersteunt Vaillant zijn klanten met een uitgebreid en professioneel dienstenaanbod.
Vaillant est une marque allemande et, depuis plus de 150 ans, un leader européen de référence dans les technologies de chauffage. L’entreprise développe des solutions durables, innovantes et économes en énergie, répondant aux besoins en matière de confort, de consommation et d’efficacité. Vaillant propose des systèmes fiables, de haute qualité et respectueux de l’environnement pour le chauffage, la climatisation et le confort sanitaire. Son portefeuille de produits comprend des pompes à chaleur, des chaudières à condensation, des thermostats intelligents et des systèmes de climatisation. Vaillant accompagne également ses clients avec une large gamme de services professionnels.
Vaillant est une marque allemande et, depuis plus de 150 ans, un leader européen de référence dans les technologies de chauffage. L’entreprise développe des solutions durables, innovantes et économes en énergie, répondant aux besoins en matière de confort, de consommation et d’efficacité. Vaillant propose des systèmes fiables, de haute qualité et respectueux de l’environnement pour le chauffage, la climatisation et le confort sanitaire. Son portefeuille de produits comprend des pompes à chaleur, des chaudières à condensation, des thermostats intelligents et des systèmes de climatisation. Vaillant accompagne également ses clients avec une large gamme de services professionnels.
Contact info
Golden Hopestraat 15, 1620, Drogenbos, Belgium
- 02/334.93.52
- www.vaillant.be
4.1
Great
2K reviews
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Technicien consciencieux et efficace
April 1, 2026
Reply from Vaillant Belgium
Bonjour Mr. Delbar,
Merci beaucoup pour votre retour ! Nous sommes ravis d’apprendre que notre technicien a fait preuve de conscience professionnelle et d’efficacité. Votre satisfaction est notre priorité et votre commentaire nous fait vraiment plaisir.
Vaillant Belgium
Magali
Reply from Vaillant Belgium
Dear Sir,
We're happy to hear that you had a customer-friendly experience. Thank you for your excellent feedback; it means a lot to us.
Vaillant Belgium
Magali
Excellent service
Excellent service. The technician was very friendly, professional, and communicated clearly throughout the entire visit. He explained every step, discussed possible issues, and gave helpful tips to avoid problems in the future. I was genuinely impressed by both his expertise and his personal approach.
February 27, 2026
Unprompted review
Reply from Vaillant Belgium
Dear Mrs,
Thank you very much for your positive feedback on our technician's visit. We will pass on your message to him. He will be delighted to hear it.
We will also share this valuable feedback with our team so that everyone can learn from it.
Always at your service, thank you again and we hope to see you soon!
Kind regards,
Lieve
Team Vaillant
El Azmani
The person who came for maintenance was very rude. Did not answer questions asked properly. There was a centralized controller from Vaillant which is not cimminicating well with Boiler, when asked to look inyo this issue, he said it was noy his problem. Not happy with the behaviour.
February 26, 2026
Reply from Vaillant Belgium
Dear Sir,Madam,
We apologize in advance for the inconvenience you experienced. The technician will be contacted about this. We have forwarded this to the appropriate person.
If you need a repair, you can always contact our after-sales service on 02/334 93 52.
Kind regards,
Lieve
Team Vaillant
Excellent Service
The inspection undertaken by your technician was very well done and the gas appliance is now in excellent working order. Thank you very much for your services!
February 24, 2026
Reply from Vaillant Belgium
Dear Mrs,
Thank you so much for your positive feedback on the visit of our technician. We'll pass your message on to him. He'll be pleased.
We'll also share this valuable feedback with our team. That way, everyone learns from it.
Always at your service, thanks again and we hope to see you again!
Kind Regards,
Lieve
Team Vaillant
The response to the breakdown was up to my expectations
The response to the breakdown was quick. Communication was effective. The repair was carried out professionally. I highly recommend the company Vaillant.
February 16, 2026
Unprompted review
Reply from Vaillant Belgium
Dear Sir, Madam,
Thank you so much for your positive feedback about our service.
We'll share this valuable feedback with our team so everyone can learn from it.
Always at your service, thank you again, and we hope to see you soon!
Lieve
Team Vaillant
Excellent maintenance service
The maintenance service from Vaillant was carried out as scheduled, they did a great job, and there were no issues...I highly recommend their service.
February 18, 2026
Reply from Vaillant Belgium
Dear customer,
Thank you so much for your positive feedback on our technician's visit. We'll pass your message on to him. He'll be pleased.
We'll also share this valuable feedback with our team. This way, everyone can learn from it.
Always at your service, thanks again, and we hope to see you again!
Team Vaillant
Magali
Reply from Vaillant Belgium
Cher, Chère,
Merci beaucoup pour votre réaction positive concernant la visite de notre technicien. Nous lui transmettons votre message. Il en sera très heureux.
Nous partageons également ce précieux commentaire avec toute notre équipe. De cette façon, tout le monde apprend.
Toujours à votre service, merci encore et à bientôt !
Lieve
Team Vaillant
correct and professoinal service
correct service. the technician was friendly and professional. Knew very well what he was doing and he could explain it.
He cleaned up the workplace before leaving.
February 6, 2026
Unprompted review
Reply from Vaillant Belgium
Dear Mr Braem,
Thank you very much for your positive feedback on the visit from our technician . We will pass on your message to him. He will be delighted to hear it.
We will also share this valuable feedback with our team so that everyone can learn from it.
Always at your service, thank you again and we hope to see you soon!
Kind Regards,
Lieve
Repair made the day we had the issue…
Repair made the day we had the issue (we have a omnium contract).
Amability of the people by Vaillant (contact and Technical)
I truly recommand Vaillant BE
January 7, 2026
Unprompted review
Reply from Vaillant Belgium
Dear Sir,
Thank you very much for your positive feedback on our technician's visit and our service. We will pass on your message to him. He will be delighted to hear it.
We will also share this valuable feedback with our team so that everyone can learn from it.
Always at your service, thank you again and we hope to see you soon!
Kind regards,
Lieve
Reply from Vaillant Belgium
Cher, Chère,
Merci beaucoup pour votre réaction positive à la visite de notre technicien. Nous lui transmettrons volontiers votre message. Il sera satisfait.
Comme nous n'avons pas d'adresse sur Trustpilot, vous pouvez toujours nous l'envoyer à l'adresse complaint@vaillant.be.
Nous partageons également ces précieux commentaires avec notre équipe. De cette façon, tout le monde apprend.
Toujours à votre service, merci encore et au plaisir de vous revoir bientôt !
Lieve
L'équipe Vaillant
Reply from Vaillant Belgium
Beste heer Luc,
Van harte bedankt voor jouw positieve reactie op het bezoek van onze service.
Deze waardevolle feedback delen we ook met ons team. Zo leert iedereen ervan.
Altijd tot jouw dienst, nog eens bedankt en graag tot ziens!
Lieve
Team Vaillant
Vaillant, a manufacturer that stands by its customers!
Since July, there have been five interventions to identify the problem in the solar boiler, parts have been replaced, but no solution has been found. During the last intervention by your chief technician, the problem was found and I am now assured of many more years of enjoyment from the Vaillant solar boiler! Manufacturers who don't shy away from problems but tackle them head-on to find a solution are rare, but this is definitely the best way to ensure years of good word-of-mouth advertising! Thank you for everything.
November 26, 2025
Unprompted review
Reply from Vaillant Belgium
Dear Mr. Brusselaers,
Thank you very much for your positive feedback on our technician's visit. We'll pass your message on to him. He'll be pleased.
We'll also share this valuable feedback with our team. This way, everyone learns from it.
Always at your service, thanks again, and we hope to see you again!
Kind regards,
Lieve
Problem fixed within a week
Had some problem with my boiler or almost 3 years old. The plummer who installed the boiler no longer does his job. Contacted directly the customer service at Vaillant. Within a week reply & fixing a date to come to check & repair. Top service!
October 10, 2025
Unprompted review
Reply from Vaillant Belgium
Dear Mr, Mrs,
Thank you very much for your positive feedback on the visit from our technician and services.
We will also share this valuable feedback with our team so that everyone can learn from it.
Always at your service, thank you again and we hope to see you soon!
Kind regards,
Lieve
Team Vaillant
Double charge for same service
++Written on 03/11/2025++
UPDATE: Het is nu een maand geleden en hoewel ze drie weken geleden hebben geantwoord dat ze het zouden onderzoeken, heb ik mijn terugbetaling nog steeds niet ontvangen. Klanten zijn zeker NIET hun eerste prioriteit!
++Written on 03/10/2025++
We had scheduled boiler maintenance with Vaillant on 02/10/2025. I was travelling at the time, but my wife was home and, unbeknownst to me, paid the technician directly after the intervention. Upon my return, I received an email requesting payment for the planned service, which I also paid.
A day later, I discovered two transactions in our accounts for the same invoice number and realised that Vaillant had accepted payment on the day and later sent another payment request to me by email.
A complaint (reference 14455753) has been open since 03/10/2025, yet I have not received any contact or update from customer service, and the issue of this duplicate payment remains unresolved. I would appreciate urgent attention and resolution of this issue.
October 2, 2025
Unprompted review
Reply from Vaillant Belgium
Dear Mr Hawson,
Your email has already been forwarded to the relevant department. Your email will be dealt with as soon as possible.
Kind regards,
Lieve
Reply from Vaillant Belgium
Cher monsieur De Moor,
Merci beaucoup pour votre réaction positive concernant la visite de notre technicien et de notre service. Nous lui transmettons votre message. Il en sera très heureux.
Nous partageons également ce précieux commentaire avec toute notre équipe. De cette façon, tout le monde apprend.
Toujours à votre service, merci encore et à bientôt !
Lieve
Team Vaillant
Vaillant aroTHERM VWL
We installed a Vaillant aroTHERM VWL 55/3 A 230V heat pump in 2022, believing we were investing in a reliable and energy-efficient solution. Unfortunately, the product has broken down three times in less than four years, leading to long periods without operation – and Vaillant’s service team has been unable to repair the system in a timely manner.
This has happened despite having a service contract and regular maintenance. The product simply hasn’t delivered the reliability one should expect from a premium brand.
To make matters worse, customer support has been very slow and difficult to reach.
Looking back, I wish we had chosen another manufacturer – such as Hitachi, which appears to offer both more reliable systems and better service.
June 21, 2025
Unprompted review
Reply from Vaillant Belgium
Dear Mr Rosengren,
Thank you for your feedback. We attach great importance to this. We would like to apologise in advance for the inconvenience you have experienced.
We would like to address this as soon as possible and we are happy to discuss this directly with you. Can you email us at complaint@vaillant.be, possibly with your phone number?
Thank you in advance and see you very soon!
Lieve
Team Vaillant
Excellent service: appointment & technician
Excellent service to get appointment (in 24h, beginning March). I was informed in advance on the time slot for the visit & I was notified when technician was on his way. Technician identified & fix problem replying all questions I had & checking the whole installation providing objective and useful advice
March 5, 2025
Unprompted review
Reply from Vaillant Belgium
Dear Sir,
Thank you very much for your positive response to our service. This pleases us and encourages us to continue doing so above all.
Thanks again and see you soon.
Kind Regards,
Lieve
Team Vaillant
Professional as expected
Telephone contact was as you would expect from a professional service. Friendly people on the other side.
Appointment was fixed in 4 businessdays, which is to be expected when it's winter times.
Technician was friendly, fixed the issue and did extra checks to reassure everything was working correctly.
Gives alot of trust as well.
Thanks to all involved.
January 14, 2025
Unprompted review
Reply from Vaillant Belgium
Dear Customer,
Thank you very much for your positive response to our technician's visit. We are happy to pass on your message to him. It will please him.
As we do not have address details through Trustpilot, you may always forward them to us at complaint@vaillant.be.
We also share this valuable feedback with our team. That way everyone learns from it.
Always at your service, thanks again and see you soon!
Lieve
Vaillant Team
No heating for a week in the middle of winter and told we have to wait another 2 weeks for an appointment!
We've had no heating for a week, in the middle of winter, and we have 2 young children. The issue has been identified, and can only be fixed directly by Vaillant. A request was raised, and I was told they would contact me for an appointment. When I didn't hear from anyone, I called and was told we had to wait another week for an appointment, but that they would try to find a sooner appointment and call me back. When I again didn't hear anything, I called back only to be told the soonest appointment was now in 2 weeks! Not only was the first appointment clearly not booked as stated, but we are now expected to live without heating for 3 weeks! I cannot believe the poor level of service and absolute disinterest we have experienced.
January 9, 2025
Unprompted review
Reply from Vaillant Belgium
Dear Mrs Swords,
Please excuse in advance the inconvenience You have experienced.
We note that the intervention has already taken place. Should you still encounter problems, please contact our after-sales service on 02/334 93 52.
Kind regards,
Lieve
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