| Ventilation Type | Address Count | |
|---|---|---|
| Aereco DCV | 35 | |
| Continuous mechanical ventilation (CMEV) | 758 | |
| Demand controlled mechanical ventilation (DCV) | 306 | |
| Extract Ventilation | 91 | |
| Mechanical ventilation with heat recovery | 305 | |
| Natural | 11 | |
| Natural ventilation | 1034 | |
| Other | 20 | |
| Total | 8 |