| Value | Category | Cases | |
|---|---|---|---|
| 1 | Electric heater | 11 | 
                                    
                                    3.1%
                                 | 
| 2 | Gas heater | 0 | 
                                    
                                    0%
                                 | 
| 3 | District heating | 0 | 
                                    
                                    0%
                                 | 
| 4 | Solar thermal system | 0 | 
                                    
                                    0%
                                 | 
| 5 | Same solid fuel stove used for cooking | 255 | 
                                    
                                    71.8%
                                 | 
| 6 | Separate solid fuel stove | 34 | 
                                    
                                    9.6%
                                 | 
| 555 | Other | 55 | 
                                    
                                    15.5%
                                 | 
| Sysmiss | 4198 |