- Clwyd Heating
- 01745 361636 - 36a Tynewydd Road, Rhyl, Clwyd, LL18 3SP
- P & L Denney
- 01745 890204 - Ty Gwyn, Llanynys, Denbigh, Clwyd, LL16 4LH
- MJR Bathrooms Gas & Heating Installations
- 01824 705908 - Unit 11 Lon Parcwr Bsns Pk, Ruthin, Clwyd, LL15 1NJ
- G.T Wilson
- 01978 861118 - 3 Arosfa Crescent, Llangollen, Clwyd, LL20 7PW
- Fueltech Gas and Oil Boiler Services
- 0845 3736639 - The Bungalow, Upper Clwyd St, Ruthin, Denbighshire, LL15 1HY
- Ggs Heating Services
- 01745 814682 - Colomendy Indust Est Rhyl Rd, LL16 5TA
- Alcock Heating Services
- 0870 8148359 - 3 Clwydian Pk Vw, St. Asaph, LL17 0BX
- S & J Plumbing and Heating
- 0845 4916923 - 32 Cambrian Walk, Rhyl, Denbigshire
- Tony Howard Heating and Plumbing
- 0845 2632219 - Waen Fawr Pentre Celyn, Ruthin, Clwyn, LL15 2HW