| combi boiler → IsA → central heating boiler | 0.59 | |
| combi boiler → IsA → easier to install | 0.53 | |
| combi boiler → IsA → quicker to install | 0.49 | |
| combi boiler → IsA → high efficiency water heater | 0.45 | |
| combi boiler → IsA → a heating system | 0.45 | |
| combi boiler → IsA → popular choice | 0.42 | |
| combi boiler → IsA → the most popular type | 0.41 | |
| combi boiler → IsA → on constant standby | 0.40 | |
| combi boiler → IsA → difficult task | 0.39 | |
| combi boiler → IsA → a combi boiler | 0.38 | |
| combi boiler → IsA → on the scene | 0.36 | |
| combi boiler → IsA → for good reason | 0.31 | |
| combi boiler → IsA → compact, economical, use mains … | 0.28 | |
| combi boiler → IsA → ideal replacement boiler | 0.26 | |
| combi boiler → IsA → smaller than other types | 0.23 |