| fit into compact spaces | 0.49 |
| convert electrical ener… | 0.48 |
| use electric power | 0.45 |
| produce odor | 0.25 |
| produce toxic emissions | 0.25 |
| get hot | 0.25 |
| allow for the flexibili… | 0.25 |
| catch fire | 0.23 |
| 100% efficient | 0.71 |
| efficient | 0.70 |
| convenient | 0.66 |
| safe | 0.45 |
| expensive | 0.32 |
| powerful | 0.32 |
| cheaper | 0.23 |
| portable | 0.16 |
| clean | 0.16 |
| installed | 0.51 |
| easy to use | 0.45 |
| attached to the undersi… | 0.32 |
| equipped with lead | 0.25 |
| designed with swivel br… | 0.25 |