| Value | Category | Cases | |
|---|---|---|---|
| 1 | central heating | 206 |
3%
|
| 2 | own system | 81 |
1.2%
|
| 3 | other (stove, electric heater, fireplace etc.) | 6259 |
91.8%
|
| 4 | no heating | 270 |
4%
|