NO - as air conditioning systems use fluorinated gases as refrigerants, all work on them must be done by professionals holding valid F-Gas certification. There is a range of different qualifications and certifications that apply for this, so it's always best to ask someone who is qualified to do this.
South Queensferry
Queensferry, likewise called South Queensferry or just "The Ferry", is a town to the west of Edinburgh, Scotland, typically an imperial burgh of West Lothian. It lies ten miles to the north-west of Edinburgh city centre, on the coast of the Firth of Forth between the Forth Bridge, Forth Road Bridge as well as the Queensferry Crossing. The prefix South serves to distinguish it from North Queensferry, on the opposite shore of the Forth. Both towns obtain their name from the ferry solution developed by Queen Margaret in the 11th century, which remained to run at the community until 1964, when the Road Bridge was opened. Its population at the 2011 census was 9,026 based on the 2010 interpretation of the region which in addition to the burgh includes Dalmeny.