How will the ban on R22 affect your company?
Since 1st January 2015, it has been illegal to use R22 refrigerant to maintain or repair air conditioning systems in the UK. If yours was installed before 2004, you should be planning to replace it as soon as possible.
There are several different approaches you can take but make sure you act quickly. If your air conditioning runs into a major problem, there will be no way to get it up and running again.