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.
Canonbie
Canonbie (population 390) is a small village in Dumfriesshire within the regional authority area of Dumfries as well as Galloway in Scotland, six miles southern of Langholm as well as two miles north of the Anglo-Scottish boundary. It is on the A7 road from Carlisle to Edinburgh, as well as the River Esk moves with it. There are frequent referrals in older records to it as Canobie. Canonbie was eternalized in a rhyme by Sir Walter Scott entitled Marmion. A well-known section covers the ventures of young Lochinvar. Having actually taken the hand of the new bride of Netherby Hall, regarding 3 miles southern of Canonbie, the dashing knight is chased after with Canonbie, however makes good his getaway.