Vaillant Denmark Reviews 710

TrustScore 4.5 out of 5

4.4

While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more

To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more

Company details

  1. Heating Equipment Supplier
  2. Air Conditioning Contractor
  3. Air Conditioning System Supplier
  4. Boiler and Heating Service
  5. Hot Water System Supplier
  6. Thermal Energy Company

About Vaillant Denmark

Written by the company

varmepumper

Vaillant er en af Europas førende producenter inden for innovativ opvarmnings- og varmtvandsproduktion. Vi tilbyder miljøvenlige, intelligente og energibesparende varmesystemer, der passer perfekt til både en- og flerfamiliehuse samt skræddersyede løsninger til industrien og erhvervslivet.

Vores omfattende produktprogram inkluderer fremtidssikrede og supereffektive varmeløsninger såsom gasfyr, jordvarmeanlæg, luft-til-vand varmepumper, luft-til-luft varmepumper, genvindingsanlæg, oliefyr, elkedler, varmtvandsbeholdere og avancerede styringssystemer. Derudover tilbyder vi et bredt udvalg af tilbehør og serviceydelser, der komplementerer vores produktsortiment. Med hovedsæde i Remscheid, har Vaillant Group været en pioner inden for varmeindustrien siden 1874, og Vaillant A/S har betjent det danske marked med ekspertise og kvalitet siden 1961.

✓ Er du klar til at opgradere dit varmesystem? Kontakt os i dag for at få en skræddersyet løsning, der passer til dine behov.
✓ Besøg vores hjemmeside for at lære mere om vores produkter og tjenester.
✓ Lad os hjælpe dig med at skabe et mere energieffektivt hjem eller virksomhed.


Contact info

4.4

Excellent

TrustScore 4.5 out of 5

710 reviews

5-star
4-star
3-star
2-star
1-star

At Trustpilot, it's all about human content. This business can also access our AI-assisted response tool which helps them draft replies.

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

Good gas boiler service

Got the gas boiler serviced.
Good service and the job was carried out really quick, the same day I contacted them.

19 September 2025
Unprompted review
Vaillant Denmark logo

Reply from Vaillant Denmark

Hi Luis,

Thank you so much for your review, it means a lot to us!
We are very happy to hear we could provide quick and efficient service.

Best regards,
Vaillant

Rated 1 out of 5 stars

DO NOT USE THIS COMPANY

What an awful company!!
I have just had a boiler installed and there is a manufacturing fault in the heat exchange water pouring in to it where the gas is - dangerous I'd say.
So for 5 DAYS I have no heating or hot water in the middle of December. Engineer spent 5 minutes in my house to tell me they don't carry the parts and would speak to his manager and left.
Customer service said the part is not in stock and they see if any engineers have one!! (They don't carry these parts). I was told I will get a call back in 24 hours. MY HOUSE MY FAMILY ARE FREEZING AND NO HOT WATER and no idea when this horrible situation will end. I will finish this email and will be seeking legal advise.

12 December 2024
Unprompted review
Vaillant Denmark logo

Reply from Vaillant Denmark

Hi Jules,

We are sorry to hear about your experience. We believe this review was meant for our colleagues in Vaillant UK (https://uk.trustpilot.com/review/www.vaillant.co.uk?stars=1)

We would really appreciate it if you could add your feedback in the correct profile so they are able to assist you in any way they can. We really hope you get the necessary help from them.

We wish you a happy holiday.
Best regards,
Vaillant Denmark

Rated 1 out of 5 stars

Unhelpful customer services

We booked an annual boiler service which should include a thorough inspection and cleaning of key components, including filters. If the filter was blocked within 30 days of having an annual services, it raises questions about the thoroughness of the initial service.

There was F75 Error Code: This error often indicates a problem with the water pressure sensor or pump. If debris was the cause, it should have been addressed during the service carried out 1-Nov 2024.

While not all systems come with a magnetic filter, it is a good recommendation for preventing debris build-up. However, the engineer should of suggested it during the service, it should have been noted and possibly addressed then, not wait until it broke down leaving my very elderly parents without hot water and no heating for two days.

The engineer which came out on 3 December to correct the issue, was very messy and water poured out everywhere on to the floor and furthermore lost the screws for the cover which is unacceptable. Professionalism and respect for the customer's home are basic expectations but not in this case.

Given these points, it seems reasonable to question the quality of the initial service. I initially asked for a refund but was refused as the service was carried out thoroughly, not to my surprise it wasn't. So basically they did not apologise. Very disappointed with the customer service we received. Will think about using them again.

4 December 2024
Unprompted review
Vaillant Denmark logo

Reply from Vaillant Denmark

Hi Kika,

We are sorry to hear about your experience during your annual boiler service. Unfortunately, we believe this review was meant for another one of our domains (Vaillant UK - https://uk.trustpilot.com/review/www.vaillant.co.uk?stars=1).

We would really appreciate it if you could add your feedback in the correct profile so they are able to assist you in any way they can. We really hope you get the necessary help from them.

Best regards,
Vaillant Denmark

Rated 5 out of 5 stars

Ken in renewables tech dept

Ken in renewables tech dept deserves a raise! Guided us slowly through what needed to be done. Patient and calm manner. Thank you for your help.

23 February 2024
Unprompted review
Vaillant Denmark logo

Reply from Vaillant Denmark

Hi Tom, thank you for you review.

We appreciate the feedback.

We wish you a pleasant day

Best, Vaillant

Rated 5 out of 5 stars

I had problems with my heat pump.

I had problems with my heat pump due to bad work performance from the electricians installing it. This was in Norway. The electrician were from another company. But Vaillant helped me to find the problems so the electrical company could come back and fix the problem. Vaillant has very good knowledge and service.

29 October 2021
Unprompted review
Rated 4 out of 5 stars

Svare telefon ikke.

Svare telefon ikke.

Update:
I called back later in the day, and all my questions were answered by very friendly and professional people. I am not sure if I want to give the experience 3 or 4 stars, so I will give Vaillant the benefit of the doubt and go for 4. I still think it is very annoying that the answering machine goes straight to voicemail if it is busy. It makes we wonder if Vaillant will ever answer. It would be much nicer if it would just tell me it is busy and let me decide if I want to wait for 45 min or call back later. Than I would have been happy to give 5 stars.

9 March 2021
Unprompted review
Vaillant Denmark logo

Reply from Vaillant Denmark

Hej Rick.

Tak for din anmeldelse.

Jeg forstår ikke helt hvad du mener med, at vi ikke svarer telefonen.
Der sidder 4 mand i vores tekniske support og laver ikke andet end at svarer telefoner.
Hvis de er optaget bliver du bedt om at lægge en besked.
Du skal være meget velkommen til at ringe igen.

Med venlig hilsen
Frantz Broskov
Vaillant A/S

Show reviews in all languages. (710 reviews)

The Trustpilot Experience

Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.

Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.

Learn more about other kinds of reviews.

We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.

Learn about Trustpilot’s review process.

Here are 8 tips for writing great reviews.

Verification can help ensure real people are writing the reviews you read on Trustpilot.

Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.

Take a closer look