| Similarity | Rank | |
|---|---|---|
| cooling | 0.893 | 5940 |
| heaters | 0.861 | 15430 |
| heater | 0.860 | 10118 |
| underfloor | 0.835 | 66006 |
| boiler | 0.824 | 13188 |
| heat | 0.807 | 1440 |
| radiators | 0.800 | 37705 |
| boilers | 0.797 | 25056 |
| Heating | 0.795 | 20354 |
| evaporative | 0.792 | 67703 |
| furnaces | 0.791 | 30904 |
| air-conditioning | 0.791 | 27677 |
| tankless | 0.791 | 50304 |
| furnace | 0.788 | 12662 |
| gas-fired | 0.785 | 70372 |
| condensing | 0.783 | 47427 |
| convection | 0.780 | 35996 |
| ducted | 0.776 | 91724 |
| evaporator | 0.776 | 54470 |
| HVAC | 0.774 | 15563 |
| chillers | 0.770 | 71691 |
| ventilating | 0.765 | 89830 |
| refrigerant | 0.761 | 36320 |
| electricity | 0.758 | 3160 |
| refrigeration | 0.753 | 25244 |