21 Groep
21 Groep

21 Groep

location Meester F.J. Haarmanweg 38, Terneuzen
review43 Reviews

Introductie

21 Groep, gevestigd in Terneuzen, is gespecialiseerd in de installatie van zonnepanelen. Het bedrijf biedt ook montagemateriaal, onderhoud en aansluiting aan, en ondersteunt zowel schuine als platte daken en dakkapellen in woningbouwprojecten.

Expertise

installatie van zonnepanelen

montagemateriaal

onderhoud van zonnepanelen

installatie & aansluiting

smart home

woningbouw

schakelaars

verkoop van zonnepanelen

schuin dak

plat dak of dakkapel

beide (schuin & plat dak of dakkapel)

Ervaring

exp 1 27 Jaren in bedrijf

review 1 43 Reviews

Reviews

star one 8,2 43 reviews van 2 bronnen


Tizza Rozza star two 2,0 11 Apr 2026 Google

Two stars. You lucky people..

marianne Schipper star two 1,0 11 Apr 2026 Google

The technician rushed in, didn't have much time, was free at 2:00 PM, and now it was 1:00 PM. He checked a few things. The conclusion was that everything was rejected. He left, literally leaving us in the cold. According to the office, they couldn't help us for another three weeks. We called another company, and they arrived within the hour and created a temporary solution. So we had heat. Two days later, everything was replaced and works perfectly, and it was much cheaper. They were also a certified company.

Willem Leading Edge star two 1,0 11 Apr 2026 Google

This company connects 380V to 230V without grounding and leaves exposed electrical wires in the box without capping them. What a disgrace! Never hire this company! This company has NEN stickers on the thermal bridges in the kitchen, meaning they're approved. But this is impossible! These are ready-to-plug boxes. They're putting stickers on them for fake approvals. Scammers!

Peggy Pauwels star two 4,0 11 Apr 2026 Google

Saturday evening, 11:30 PM. Contacted immediately; the technician was supposed to be there within 20 minutes. Apparently, he flew, because he arrived within 10 minutes. Professional, the problem was found within 5 minutes. Still waiting for the bill. In any case, the service is good!

Klaas Andrik star two 1,0 11 Apr 2026 Google

Incompetent mechanics charging exorbitantly long hours even though they've barely carried out anything. Pure money-grubbing, incapable of providing solution-oriented customer service!

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