Installatiebedrijven Noord-Holland
| Plaats | Installatiebedrijven |
| 5 | |
| 2 | |
| 2 | |
| 13 | |
| 1 | |
| 34 | |
| 1 | |
| 4 | |
| 4 | |
| 1 | |
| 1 | |
| 2 | |
| 4 | |
| 1 | |
| 4 | |
| 1 | |
| 1 | |
| 1 | |
| 4 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 17 | |
| 5 | |
| 8 | |
| 1 | |
| 1 | |
| 4 | |
| 2 | |
| 2 | |
| 1 | |
| 1 | |
| 3 | |
| 6 | |
| 3 | |
| 1 | |
| 2 | |
| 1 | |
| 3 | |
| 3 | |
| 3 | |
| 2 | |
| 1 | |
| 3 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 5 | |
| 2 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 3 | |
| 1 | |
| 5 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 3 | |
| 1 | |
| 2 | |
| 2 | |
| 1 | |
| 2 | |
| 1 | |
| 2 | |
| 4 | |
| 2 | |
| 8 | |
| 1 | |
| 1 | |
| 1 | |
| 3 | |
| 3 |