| new boiler → IsA → £2,300 | 0.60 | |
| new boiler → IsA → 88% efficient | 0.53 | |
| new boiler → IsA → good option | 0.52 | |
| new boiler → IsA → cast aluminum | 0.44 | |
| new boiler → IsA → complex decision | 0.44 | |
| new boiler → IsA → green way | 0.35 | |
| new boiler → IsA → worthwhile addition | 0.29 |