Gas training courses are open to nearly anyone. A usual student may be somebody that is already working with a friend in the gas or plumbing type of industry. Or may perhaps be someone looking for a change in career and do not have any previous experience. No matter who you are, everyone should be capable of finishing at least one of our gas courses which will help you to obtain a gas certification. At the end of 2014, R-22 refrigerant will be banned under EU legislation. So air conditioner systems with R-22 gas will effectively become redundant as any loss of gas cannot be replaced. It is estimated that there are still millions of R-22 systems still in operation, but the main reason for businesses delaying implementation of R-22 replacement systems is, putting it simply, the expense.