Training & Assessment

As an approved assessment centre we are able to offer training and assessment programmes in the many areas from Commercial and Domestic Natural Gas Safety Training Courses to LPG conversion and installation training courses.

Other areas inlcude the following;

Domestic Natural Gas

BGU Basic Gas Utilisation (Domestic) Course

CCN1 Core Domestic Natural Gas Safety

CENWATDomestic Gas Central Heating/Domestic Instantaneous Water Heater

CKR1 Domestic Gas Cookers

HTR1 Domestic Gas Fires and Wall Heaters

DAH1 Ducted warm air heaters

LAU1 Tumble Driers

CPA1 Combustion Analysis & Performance

CMDDA-1 Carbon Monoxide/Dioxide in Domestic Dwellings

Energy Efficiency for Domestic Heating

Liquified Petroleum Gas

CoNGLP1 Natural Gas to LPG Changeover

CCLP/Boats Core LPG with Boats (& one element i.e. cookers)

PD Permanent Dwellings

RPH Residential Park Homes

LAV Leisure Vehicles

B Boats

REFLP2 Caravan Gas Refrigerators

HTRLP2 Fire & Wall Heaters

VESLP1 & 2 Vessel Pipework

EFJLP1 Electrofusion Welding

CMCLP1 LPG to Mobile Catering Safety

Commercial Natural Gas

COCN1 Core Commercial Natural Gas Safety

CoDNCO1 Changeover Domestic Natural Gas to Commercial Natural Gas

CORT1 Overhead Radiant Tube/Radiant Plaque Heaters

CIGA1 Commercial Indirect Fired Heating Appliances and Equipment

CDGA1 Commercial Direct Fired Heating Appliances and Equipment

TPCP1 Tightness testing and purging of installation pipework exceeding 1m3 in volume, up to 16 bar operating pressure (natural gas) and 2 bar operating pressure for LPG

TPCP1A Tightness testing and purging of installation pipework not exceeding 1m3 in volume, 40 mbar pressure and 150mm diameter natural gas only

ICPN1 Installation of Commercial Pipework

ICAE1 First Fix of Commercial Appliances/Equipment

CMET1 LP Diaphragm & RPD Meters

CCLNG CLE Commercial Laundry Equipment - Additional Core and appliance

CCCN1 Core Commercial Catering Gas Safety

CoDC1 Changeover Core Gas Safety from Domestic to Commercial Catering

COMCAT 1 Boiling Burners (Ranges, Ovens)
COMCAT 2 Water Boilers (Pressure or Expansion Type, Pressure Steamers)
COMCAT 3 Fryers & Grills


OFT 101 Domestic/Light Commercial Oil Firing Commissioning & Servicing Pressure Jet appliances
OFT 105 E Domestic/Light Commercial Oil Firing System Installation
OFT 600 A Domestic/Light Commercial Oil Storage Tank Installation


UDHWSS Unvented Domestic Hot Water Storage Systems   

Water Regulations BPEC/WRAS Water Regulations

Legionella Prevention & Water Treatment

Combined Heating Services Ltd, 24 White Lodge Business Estate, Hall Road, Norwich, Norfolk NR4 6DG
Tel ; 01603 622001     Fax: 01603 622881     Email: