| Terry Austin | 028 7035 2883 | | 11 Hillview Park, Coleraine, BT51 3EH |  Map & Directions |
| Thomas Magill | 028 4372 2829 | | 133 South Promenade, Newcastle, BT33 0HA | | Map & Directions |
| D & E Gray | 028 9083 3320 | | 60 Street Annes Crescent , Newtownabbey, BT36 5JZ | | Map & Directions |
| Ni Gas Plumbing & Heating Ltd | 028 9334 1093 | | 16 Castlebrook Avenue, Ballynure, Ballyclare, BT39 9GX | | Map & Directions |
| Action Plumbing & Heating | 028 9061 0944 | | 26 Oakhurst Avenue, Belfast, BT10 0PE | | Map & Directions |
| Campbell Boiler Services | 028 9445 9393 | | Lurgan Road , Glenavy, Crumlin, BT29 4NA | | Map & Directions |
| M M Building Services Ltd | 028 9062 4411 | | Unit 5/6 Glenand Centre, 5 Blackstaff Way, Kennedy Way Industrial Estate, Belfast, BT11 9DS | | Map & Directions |
| J Hinds | 028 4277 1652 | | 15 Dunevly Road, Portaferry, Newtownards, BT22 1NB | | Map & Directions |
| R J M Heating & Plumbing Services Ltd | 028 9146 6461 | | 11 Westmorland Crescent, Bangor, BT20 3LX | | Map & Directions |
| P A Donaghy | 028 8775 8601 | | 95 Sluggan Road, Pomeroy, Dungannon, BT70 2UP | | Map & Directions |
| Sapphire Solutions | 028 9060 3810 | | 20 Trenchard, Belfast, BT11 9NS | | Map & Directions |
| D H Plumbing & Heating | 028 9086 0124 | | 25 Sycamore Drive, Newtownabbey, BT37 0PA | | Map & Directions |
| H Allen | 028 3835 9313 | | 181 West Street , Portadown, Craigavon, BT62 4BT | | Map & Directions |
| Lear Mechanical Services | 028 7778 1700 | | 184 Learmount Road, Park, Londonderry, BT47 4BA | | Map & Directions |
| Hanna Bros | 028 3832 3306 | | 95 Union Street, Lurgan, Craigavon, BT66 8ED | | Map & Directions |
| Robert Hull | 028 3883 1600 | | 21 Gilford Road, Scarva, Craigavon, BT63 6NG | | Map & Directions |
| Sean Mccaugherty | 028 9756 5455 | | 35 Cumber Road, Drumaness, Ballynahinch, BT24 8SG | | Map & Directions |
| Maurice Stevenson Ltd | 028 3832 7636 | | Annesborough Industrial Estate, Site 32 Annesborough Road, Lurgan, Craigavon, BT67 9JD | | Map & Directions |
| James Mcilroy | 028 9335 1851 | | 82 Paisleys Road, Carrickfergus, BT38 9AH | | Map & Directions |
| James Gray | 028 9447 3662 | | 24 Hollybrook Road, Randalstown, Antrim, BT41 2PB | | Map & Directions |
| Robert Newberry | 028 9145 9928 | | Unit 1, 4 Balloo Drive, Bangor, BT19 7QY | | Map & Directions |
| Russells | 028 9751 1040 | | 25 Lessans Road, Saintfield, Ballynahinch, BT24 7HD | | Map & Directions |
| Stanley Mcclelland | 028 9146 5183 | | 68 Cotton Road, Bangor, BT19 7QH | | Map & Directions |
| Coast Line Mechanical Services | 028 7775 0322 | | 16 Limestone Road, Limavady, BT49 0LB | | Map & Directions |
| Thomas J Patterson | 028 8224 4567 | | 16 Gillygooly Road, Omagh, BT78 5PN | | Map & Directions |
| Mcaleer & Mcgarrity Ltd | 028 8675 1905 | | 79 Tulnacross Road, Cookstown, BT80 9NP | | Map & Directions |
| Kearns Mechanical Services | 028 6773 8800 | | Hillview House, Aughanhinch, Newtownbutler, Enniskillen, BT92 0GY | | Map & Directions |
| Adrian Magorrian | 028 4372 4688 | | 17 Ardaluin Court, Newcastle, BT33 0RT | | Map & Directions |
| James Guy | 028 9037 0868 | | 11 Ben Madigan Park South, Newtownabbey, BT36 7PX | | Map & Directions |
| A Rankin & Son | 028 7946 8231 | | 60 Main Street, Castledawson, Magherafelt, BT45 8AB | | Map & Directions |
| C H C Facilities Management Ltd | 028 3833 4874 | | Unit 33, Seagoe Industrial Area, Portadown, Craigavon, BT63 5QD | | Map & Directions |
| David Scott & Son | 028 9081 2331 | | 70 Ballynahinch Road, Carryduff, Belfast, BT8 8DP | | Map & Directions |
| Hgs Building & Mechanical Services Ltd | 028 7964 2433 | | Victoria House, Main Street, Maghera, BT46 5AF | | Map & Directions |
| F M Services | 028 9064 2228 | | 12 Mount Merrion Gardens, Belfast, BT6 0FW | | Map & Directions |
| Curran Heating & Plumbing | 028 9060 3130 | | 112 Trench Park, Belfast, BT11 9FG | | Map & Directions |
| Evans Brothers | 028 9041 0354 | | 4 Cumberland Court, Dundonald, Belfast, BT16 2AP | | Map & Directions |
| Bernard J Mulholland | 028 3833 2620 | | 3 Killycomain Road , Portadown, Craigavon, BT63 5BT | | Map & Directions |
| J Bunting | 028 9060 0606 | | Blackstaff Road , Kennedy Way Industrial Estate , Belfast, BT11 9DT | | Map & Directions |
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