- William Mcallen & Sons Ltd
- 028 43723306 - 33 Bryansford Gardens, Newcastle, County Down, BT33 0EQ
- Alternative Heat
- Station Road, Castlewellan, County Down, BT31 9NF
- 4.9 miles from Newcastle
- Lecale Plumbing & Heating
- 028 44842001 - 15 Crossmore Road, Ardglass, Downpatrick, County Down, BT30 7TA
- 11.2 miles from Newcastle
- McKeown
- 028 44830965 - 79 Teconnaught Rd, Newcastle, BT30 9HH
- 11.2 miles from Newcastle
- John Byrne
- 028 41754064 - 6 Lazy Hl, Warrenpoint, Newry, County Down, BT34 3GB
- 14.4 miles from Newcastle
- Maxwell Lyons
- 028 30267412 - Unit 4 Greenbank Business Centre, Greenbank Industrial Estate, Newry, County Down, BT34 2QX
- 14.4 miles from Newcastle