| Similarity | Rank | |
|---|---|---|
| ventilate | 0.768 | 16163 |
| ventilator | 0.761 | 16599 |
| underfloor | 0.749 | 50223 |
| insulation | 0.746 | 8286 |
| thermostatic | 0.745 | 51536 |
| ballvalve | 0.720 | 30981 |
| thermostat | 0.715 | 18310 |
| extractor | 0.714 | 27210 |
| thermostatically | 0.714 | 55660 |
| feed-and-expansion | 0.713 | 47951 |
| non-return | 0.712 | 53274 |
| draught-proofing | 0.706 | 68446 |
| pipework | 0.704 | 23535 |
| ducting | 0.700 | 52494 |
| humidifier | 0.695 | 69964 |
| draincock | 0.695 | 60890 |
| fernox | 0.693 | 77340 |
| mains-voltage | 0.692 | 63251 |
| gatevalve | 0.691 | 64458 |
| radiator | 0.690 | 7852 |
| anti-freeze | 0.687 | 79601 |
| heaterstat | 0.686 | 47719 |
| aeration | 0.685 | 27937 |
| restrictor | 0.685 | 87099 |
| multi-point | 0.685 | 64459 |