| come with cover | 0.59 |
| condense type | 0.55 |
| make for substantial ex… | 0.50 |
| fit into a home condens… | 0.48 |
| condense with larger he… | 0.47 |
| save money | 0.43 |
| pay in one lump sum | 0.42 |
| come with warranty | 0.41 |
| increase efficiency | 0.38 |
| work with old systems | 0.37 |
| significant impact | 0.36 |
| wastage of less than 10p | 0.33 |
| polypropylene | 0.46 |
| stainless steel new ven… | 0.45 |
| water treatment | 0.44 |
| £2,300 | 0.60 |
| 88% efficient | 0.53 |
| good option | 0.52 |
| complex decision | 0.44 |
| cast aluminum | 0.44 |
| green way | 0.35 |
| worthwhile addition | 0.29 |
| installed | 0.69 |
| required to be high-eff… | 0.66 |
| to be installed in same… | 0.53 |
| designed with the user | 0.52 |
| installed for less than… | 0.47 |
| completed | 0.43 |
| installed in the uk | 0.41 |
| cheap to run | 0.38 |
| installed by gas safe r… | 0.35 |
| required | 0.35 |
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