Getting an electrical certificate is an important part of being a landlord or if you are selling your home. To schedule an inspection, approach a well-known and recommended gas and electrical certificates engineer. 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.