| Ventilation Type | Address Count | |
|---|---|---|
| Aereco DCV | 48 | |
| Continuous mechanical ventilation (CMEV) | 924 | |
| Demand controlled mechanical ventilation (DCV) | 306 | |
| Extract Ventilation | 140 | |
| Mechanical Extract | 31 | |
| Mechanical ventilation with heat recovery | 317 | |
| Natural | 51 | |
| Natural ventilation | 1095 | |
| Other | 21 | |
| Total | 9 |