| Similarity | Rank | |
|---|---|---|
| furnace | 0.900 | 12662 |
| boilers | 0.896 | 25056 |
| heaters | 0.827 | 15430 |
| boiler | 0.802 | 13188 |
| heating | 0.791 | 4216 |
| ovens | 0.788 | 23235 |
| stoves | 0.786 | 24916 |
| gas-fired | 0.784 | 70372 |
| radiators | 0.782 | 37705 |
| chillers | 0.771 | 71691 |
| kilns | 0.764 | 56939 |
| combustion | 0.764 | 15295 |
| exchangers | 0.762 | 59321 |
| fireplaces | 0.750 | 24727 |
| condensing | 0.743 | 47427 |
| chimneys | 0.741 | 38703 |
| heater | 0.735 | 10118 |
| compressors | 0.734 | 38524 |
| tankless | 0.734 | 50304 |
| Heaters | 0.729 | 66548 |
| kiln | 0.727 | 29889 |
| coal-fired | 0.725 | 36383 |
| flue | 0.720 | 38443 |
| incinerators | 0.719 | 86069 |
| propane | 0.719 | 19839 |