| Jem Building Services | 020 8428 4318 | | 36 The Avenue, Hatch End, Pinner, HA5 4EY |  Map & Directions |
| S & H Heating Ltd | 020 8868 0803 | | 47a West Avenue, Pinner, HA5 5DA | | Map & Directions |
| Emery Installations | 020 8426 1224 | | 6 Birchmead Avenue, Pinner, HA5 2BG | | Map & Directions |
| A J Chapman & Son | 020 8428 4117 | | 11 Briants Close, Pinner, HA5 4SY | | Map & Directions |
| Heating Repairs Ltd | 07956 449602 | | 28 Mount Park Road, Pinner, HA5 2JR | | Map & Directions |
| Central Installations | 01895 678987 | | 100 Dulverton Road, Ruislip, HA4 9AG | | Map & Directions |
| E & B Services | 020 8902 9174 | | 35 Sylvia Gardens, Wembley, HA9 6HR | | Map & Directions |
| Planvale Services | 0800 074 8394 | | 27 Edwards Avenue, Ruislip, HA4 6UP | | Map & Directions |
| T Services | 020 8427 0342 | | Unit 1062, 1a Neptune Road, Harrow, HA1 4HY | | Map & Directions |
| Arc Plumbing & Heating Services | 01923 821090 | | 86 Harrison Close, Northwood, HA6 2PN | | Map & Directions |
| Kevin Sheedy | 01895 632366 | | 32 Westholme Gardens, Ruislip, HA4 8QH | | Map & Directions |
| Smith D W Plumbing & Heating | 020 8958 3868 | | 186 Broadfields Avenue, Edgware, HA8 8TF | | Map & Directions |
| Marlin Heating Systems | 01895 633174 | | 3 Cherwell Way, Ruislip, HA4 7BE | | Map & Directions |
| Russell Black Ltd | 020 8907 7757 | | 399 Kenton Lane, Harrow, HA3 8RZ | | Map & Directions |
| G C P S Power Flushing | 07837 620953 | | Studio 44 Building 56, Magnet Road , East Lane Business Park , Wembley, HA9 7RG | | Map & Directions |
| A C Contractors Ltd | 020 8904 3502 | | 100 Sudbury Court Drive , Harrow, HA1 3TF | | Map & Directions |
| Shepherd & James | 020 8429 4500 | | 112 Cambridge Road, Harrow, HA2 7LE | | Map & Directions |
| R Davies Maintenance Ltd | 020 8423 2423 | | 130 Manor Way, Ruislip, HA4 8HR | | Map & Directions |
| Kiwi Drainage Ltd | 020 8908 9000 | | 44 Lulworth Avenue, Wembley, HA9 8TP | | Map & Directions |
| M S Plumbing & Heating Services | 020 8907 8006 | | 93 Alicia Gardens, Harrow, HA3 8JD | | Map & Directions |
| T G A Plumbing Services | 01895 634582 | | 5 Cranley Drive, Ruislip, HA4 6BZ | | Map & Directions |
| A P Builders & Plumbers | 020 8422 2145 | | 111 Carlyon Avenue , Harrow, HA2 8SN | | Map & Directions |
| Hallesy Services Ltd | 01895 674740 | | 105 Manor Way, Ruislip, HA4 8HW | | Map & Directions |
| Mahadev Heating Ltd | 020 8204 8221 | | 62 St. Pauls Avenue, Harrow, HA3 9PS | | Map & Directions |
| D & H Plumbing & Heating Engineers | 020 8797 4972 | | 3 Colyton Close, Wembley, HA0 2HG | | Map & Directions |
| All-Ways Plumbing & Heating | 020 8952 5200 | | 111 Beverley Drive , Edgware, HA8 5NH | | Map & Directions |
| Fairdeal Heating Co | 020 8422 9600 | | 62 Lower Road, Harrow, HA2 0DH | | Map & Directions |
| M J Hayes Plumbing & Heating | 020 8841 2527 | | 49 The Fairway, Ruislip, HA4 0SP | | Map & Directions |
| Aabbey 2000 Ltd | 020 8903 9020 | | Trinity House, Heather Park Drive, Wembley, HA0 1SU | | Map & Directions |
| Brogan Plumbing Services | 07985 584889 | | 39 Montrose Avenue , Edgware, HA8 0DX | | Map & Directions |
| Metman Enterprises Ltd | 020 8907 1400 | | 291 Kenton Road, Harrow, HA3 0HQ | | Map & Directions |
| Quality Heating | 01895 623574 | | 41 Eastcote Road , Ruislip, HA4 8BE | | Map & Directions |
| Heatsave Installations | 020 8903 8643 | | 10 Craigmuir Park, Wembley, HA0 1NY | | Map & Directions |
| Joseph Plumbing & Heating | 020 8908 2778 | | 2 Peel Road, Wembley, HA9 7LU | | Map & Directions |
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