ACS code
Description
Pre-Requisite
Estimated days required for assessment
CCN 1
Core Domestic Gas Safety Assessment
Existing or Expired Gas Qualification or suitable proof of category
2 ½
CoCDN 1
Changeover from Commercial to Domestic Core Safety
COCN 1
1
CEN 1 or CENLP 1
Install, Service, Commission, Repair Domestic Natural Gas or LPG Central Heating Boilers upto 70 kW net
CCN 1 or CCLP 1
1
CKR 1 or CKRLP 1
Install, Service, Commission, Repair Domestic Natural Gas or LPG Cooking Appliances
CCN 1 or CCLP 1
1
HTR 1 or HTRLP 1
Install, Service, Commission, Repair Domestic Natural Gas or LPG Space & Wall Heaters (Fires)
CCN 1 or CCLP 1
1
WAT 1 or WATLP 1
Install, Service, Commission, Repair Domestic Natural Gas or LPG Water Heating Appliances
CCN 1 or CCLP 1
1
DAH 1 or DAHLP 1
Install, Service, Commission, Repair Domestic Natural Gas or LPG Warm Air Heating
CCN 1 or CCLP 1
1
LAU 1 or LAULP 1
Install, Service, Commission, Repair Domestic Natural Gas or LPG Laundry Equipment
CCN 1 or CCLP 1
1
MET 1 or METLP 1
Install & Exchange Domestic Natural Gas or LPG Gas Meters
CCN 1 or CCLP 1 or CoDNCO 1
1
LEI 1
Install, Service, Commission, Repair Leisure Equipment -Barbecues, Patio Heaters etc.
CCN 1,CCLP 1 or CONGLP 1
1
DFDA 1
Install, Service, Commission, Repair Domestic fitted Appliances with Forced Draught Burners
CCN 1 or CCLP 1
1
CKHB 1
Install, Service, Commission, Repair Domestic Gas Fired Range Cookers & Boilers
CCN 1
1
CoDNESP 1
Changeover from CCN1 to Emergency Service Provider
CCN1
1
CPA1
Combustion Performance Analysis
CCN 1 plus at least one of CEN1, WAT1, HTR1
1