Gray Process Heaters Ltd, as part of Saunders Specialised Services Ltd are member of the following associations:

NICEIC
Gray Process Heaters Ltd as part of Saunders Specialised Services Ltd group are registered with the NICEIC as Approved Contractors for all aspects of electrical engineering required for all types of commercial and industrial work

CORGI
Gray Process Heaters Ltd as part of Saunders Specialised Services Ltd group are registered with CORGI to carry out the following:
- Installation of commercial and industrial natural gas & LPG gas fired heating appliances, boilers and equipment.
- Servicing & maintenance to commercial & industrial natural gas & LPG gas fired heating appliances, boilers and equipment.
- Installation of commercial and industrial natural gas & LPG gas fired process plant equipment.
- Servicing and maintenance to commercial and industrial natural gas & LPG gas fired Process plant equipment.
- Installation, servicing and maintenance for all natural gas & LPG gas fired domestic heating and hot water boilers and water heater equipment.

OFTEC
Gray Process Heaters Ltd as part of Saunders Specialised Services Ltd group are registered with OFTEC to carry out the following:
- Installation of commercial and industrial oil fired heating appliances, boilers and equipment.
- Servicing & maintenance to commercial & industrial oil fired heating appliances, boilers and equipment.
- Installation of commercial and industrial oil fired Process plant equipment.
- Installation, servicing and maintenance for all oil fired domestic heating and hot water boilers and water heater equipment.
- Installation, servicing and maintenance of commercial, industrial and domestic oil tanks and storage units.

HVCA
Installation of commercial and industrial Heating and Ventilation equipment.

Calor Force
Gray Process Heaters Ltd as part of Saunders Specialised Services Ltd group are registered with CORGI to carry out the following:


- Installation of commercial and industrial natural gas & LPG gas fired heating appliances, boilers and equipment.
- Servicing & maintenance to commercial & industrial natural gas & LPG gas fired heating appliances, boilers and equipment.
- Installation of commercial and industrial natural gas & LPG gas fired process plant equipment.
- Servicing and maintenance to commercial and industrial natural gas & LPG gas fired Process plant equipment.
- Installation, servicing and maintenance for all natural gas & LPG gas fired domestic heating and hot water boilers and water heater equipment.

Trust Mark

Saunders SPecialised Servcies are a registered Trust MArk Company.

Trust Mark is the Government backed initiative to help comsumers find reliable and trustworthy tradesmen to carry out repairs, inside and outside the home.

By using Trust Mark you are assured of the following:
- Our firms technical skills have been independently checked through on-site inspecitions.
- Our quality of work, trading practices and customer satisfaction is monitered.
- We have had checks done on our trading records and our financial status.
- We are able to offer an insurance backed warrenty.
- Our firm offer a clear and user friendly complaints procedure should you need it.

REFCOM

Saunders are registered with REFCOM in accordance witht the Fluorinated Greenhouse Gases Regulations 2009 No.261; as necessary to carry out servicing and installation for air conditioning equipment.