HVAC Training

I am a time served plumber/heating engineer with over 23 years experience. I have all up to date gas qualifications and have worked on heat source pumps. I am looking to get into HVAC. What taining/qualifications will I need to get into this field. All help and advice would be much appreciated.

hi multiwick, just to get a messure , how many gas qualifications have you got? and how much did it cost?
sedgy,

I have:
C&G Craft Certificate in Plumbing
C&G Craft Advanced Certificate in Plumbing
Gas:
CCN1
CKR1
WAT1
CEN1
MET1
Combustion Analysis
Unvented Hot Water
LPG