- 1st For Gas
- 028 27668652 - Unit 4b Ballybrakes Indust Est, Ballymoney, County Antrim, BT53 6LH
- McKeown
- 028 44830965 - 79 Teconnaught Rd, Newcastle, BT30 9HH
- Stephen Meneely
- 028 90716637 - 656 Oldpark Road, Belfast, County Antrim, BT14 6QN
- TMC Gas Services
- 028 71813531 - Lynwood Bsns Cntr Campsie Indust Estate, Eglinton, Londonderry, County Londonderry, BT47 3XX
- Frances Murray FM Gas
- 028 97511691 - 43 Greens Road, Saintfield, Northern Ireland, BT24 7EE
- Ni Gas & Heating Spares
- 0870 8147739 - 11 Scarna Locks, Craigavon, BT63 6NB
- Serviceheat
- 0870 8148359 - Unit 69, Enterprise House, 2-4 Balloo Avenue, Bangor, Down, BT19 7QT