De Duurzame Jongens Reviews 

87
•
TrustScore 3.5 out of 5

3.4

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. Electrical Installation Service

Written by the company

Onze missie is een zelfvoorzienende wereld te creëren. Met het stimuleren van de energietransitie begeleiden wij richting duurzame oplossingen. We zijn een begrip als het gaat om kwaliteit en positieve klantbeleving. De Duurzame Jongens zijn klaar voor de toekomst. Ervaar duurzaamheid met een glimlach! Top kwaliteit, maximale veiligheid voor een duurzame zonne-installatie Wij werken uitsluitend met A-merk zonnepanelen, omvormers, onderconstructies en montagematerialen. Deze producten zijn voorzien van lange fabrieksgaranties. Met De Duurzame Jongens bent u altijd verzekerd van een betrouwbare service voor de beste prijs. Bekijk onze website en reviews of bel gerust voor een vrijblijvend advies gesprek. Tijdens een advies gesprek gaan wij diep in op het schaduwplan, het te behalen rendement, bespreken alles wat u moet weten op het moment dat u overgaat op duurzame energie, denk hierbij aan wettelijke verplichtingen, salderen, zonnepanelen en de toekomst en waar u op moet letten tijdens u tocht naar een betrouwbare installateur. Verder krijgt u direct het terugverdien model te zien en ondersteunen de adviseurs bij een mogelijke financiering en hierbij natuurlijk de prijs.


Contact info

3.4

Average

TrustScore 3.5 out of 5

87 reviews

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

No recent history of asking for reviews

This company hasn't invited customers recently, so reviews may not be representative

Replied to 50% of negative reviews

Typically takes over 1 month to reply

How this company uses Trustpilot

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

3.4

All reviews

(87)

44 reviews in the last 12 months

Write a review

We perform checks on reviews

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 1 out of 5 stars

Duurzame Wronguns

In February we had an aircon unit installed. The process through to obtaining a quotation went smoothly with Sam their salesman. We had a more complex cable installation which was discussed and agreed upfront and included in the quotation. It was then further checked by a ‘technical expert’ to ensure that the installation was feasible.

We obtained a quotation with two options : Pay the full amount up front and receive additional discount, OR pay in two installments without the discount. We chose to pay in two installments, and I would strongly recommend anybody using this company to do the same.

Unfortunately from this point our experience with this company is entirely negative.
On the day of the installation the technicans arrived to install the unit however they had no overview or idea of the actual scope. They tried to plug the unit into a non earthed socket which would have been overloaded with the kitchen appliances. They informed us they had no handover from anyone so they were not familiar with the job.

The cable installation and trunking was completed to what can only be described as amateurish standard and careless. As the technicians were unaware of the installation and requirements they therefore did not have the correct size trunking or the required components (corner pieces) to carry out the work to an professional standard. They decided to carry on regardless leaving an extremely unsightly installation. At some point during the installation they decided to not even use any trunking leaving the cable hanging in one of our rooms. In addition to this holes drilled externally were not sealed and protective blanks within the electrical unit were not replaced leaving a hazardous situation. They rushed for lunch and to the next job saying head office would come and correct at a later date.

Unfortunately after the technicians left we received no further correspondence. We then contacted the previously easily contactable salesman Sam, highlighting our issue with the installation, but unfortunately we received no response even after multiple attempts at email whatsapp and calls.

The first contact we received from the Duurzame Jongens was weeks later via the finance team requesting final payment. We informed the finance person of the issues and that we would need to find a resolution before paying. Weeks passed and we still only had contact with the finance person. After over a month, and many more mails, one of the service team (Sean) arranged a visit to determine what remedial work needed to be completed. Unfortunately, Sean did not turn up or contact ourselves to say he wasn’t coming. We wasted a days holiday waiting for him.

Eventually after 6 weeks, we came to a settlement with the finance team to ensure we could carry out the last remedial work via an external professional company. We are however out of pocket both financially and in time.

We had intended to leave this fiasco as it was, however the Duurzame Jongens had the audacity to contact ourselves with a feedback form! They stated they hoped we were happy with the end result and to leave a review! The Duurzame Jongens slogan is ‘’Airco met een Glimlach’’ but after my experience with this company I am most certainly not smiling.

February 19, 2026
Unprompted review
De Duurzame Jongens logo

Reply from De Duurzame Jongens

Dear Robert,

Thank you for taking the time to share your experience with us. We are pleased to hear that the process leading up to the installation, together with Sam, was clear and pleasant.

That makes it even more disappointing to learn that the installation itself and the follow-up afterwards did not meet expectations. We fully understand how frustrating it must have been that agreements were not properly communicated internally, the finishing was not up to standard, and that you had to invest so much time and effort yourself to reach a solution.

We have just tried to contact you by phone to discuss this personally, but unfortunately we were unable to reach you.

We take your feedback seriously and have already implemented several improvements internally within our planning, communication, and service processes to help prevent situations like this in the future.

Once again, our sincere apologies for how this process unfolded, and thank you for bringing this to our attention.

Kind regards,
Team De Duurzame Jongens

Rated 5 out of 5 stars

Excellent expertise and execution

Great experience with De Duurzame Jongens! They installed two Daikin units in our home, and the workmanship was excellent. The project was completed precisely according to the initial plans. The team's expertise was clear from the start, and they worked with impressive focus and efficiency. Professional, reliable, and highly recommended for anyone looking for quality HVAC work.

April 10, 2026
Unprompted review
De Duurzame Jongens logo

Reply from De Duurzame Jongens

Thank you for this wonderful review! We're glad to hear you're happy with the installation of your two Daikin units and the quality of our team's work. It's great to know that everything went according to plan. We truly appreciate your trust and recommendation!

Kind regards,
Team De Duurzame Jongens

Rated 5 out of 5 stars

Good product

Good product, great service...

November 18, 2024
Unprompted review
De Duurzame Jongens logo

Reply from De Duurzame Jongens

Thank you for your kind review! We’re glad to hear that you’re happy with both our products and our service. We truly appreciate your trust in De Duurzame Jongens!

Kind regards,
Team De Duurzame Jongens

Show reviews in all languages. (87 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.

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