21 Groep
Meester F.J. Haarmanweg 38, Terneuzen
43 Reviews
8,2
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
27 Jaren in bedrijf
43 Reviews
Reviews
8,2
43 reviews van 2 bronnen
Tizza Rozza
2,0
11 Apr 2026
Google
Two stars. You lucky people..
marianne Schipper
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
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
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
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!