| Similarity | Rank | |
|---|---|---|
| firebox | 0.840 | 69140 |
| ductwork | 0.830 | 50140 |
| boiler | 0.816 | 13188 |
| chimney | 0.811 | 17271 |
| evaporator | 0.810 | 54470 |
| pipework | 0.807 | 80616 |
| ducting | 0.800 | 82490 |
| ventilating | 0.789 | 89830 |
| ventilation | 0.786 | 12297 |
| pipes | 0.772 | 8269 |
| furnace | 0.771 | 12662 |
| radiators | 0.770 | 37705 |
| radiator | 0.762 | 21060 |
| boilers | 0.762 | 25056 |
| exchanger | 0.760 | 36850 |
| refrigerant | 0.760 | 36320 |
| baseboard | 0.758 | 70916 |
| vapour | 0.758 | 35280 |
| underfloor | 0.757 | 66006 |
| combustion | 0.753 | 15295 |
| gasses | 0.752 | 45276 |
| exhaust | 0.749 | 9598 |
| airflow | 0.744 | 25711 |
| heater | 0.743 | 10118 |
| vents | 0.742 | 20240 |