| Similarity | Rank | |
|---|---|---|
| ventilation | 0.853 | 12297 |
| ventilating | 0.807 | 89830 |
| Insulation | 0.791 | 37908 |
| Heaters | 0.784 | 66548 |
| Cooling | 0.783 | 31879 |
| Heating | 0.766 | 20354 |
| Heater | 0.756 | 46965 |
| Exhaust | 0.755 | 54071 |
| Refrigeration | 0.748 | 64732 |
| ductwork | 0.743 | 50140 |
| HVAC | 0.740 | 15563 |
| Valves | 0.738 | 68749 |
| ventilators | 0.738 | 79317 |
| Sprinkler | 0.737 | 88949 |
| Boiler | 0.737 | 48453 |
| ducting | 0.727 | 82490 |
| Humidity | 0.723 | 62430 |
| airflow | 0.720 | 25711 |
| IAQ | 0.718 | 93590 |
| dehumidifiers | 0.717 | 81194 |
| heaters | 0.715 | 15430 |
| Sump | 0.713 | 88119 |
| ducted | 0.713 | 91724 |
| Waterproofing | 0.709 | 72985 |
| humidifiers | 0.709 | 75357 |