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.
Darvel
Darvel or Dervel (population 3,361) is a small town in East Ayrshire, Scotland. It goes to the eastern end of the Irvine Valley and is sometimes referred to as "The Lang Toon" (English: the Long Town). The community's Latin slogan, Non sibi sed cunctis, suggests "Not for ourselves, but for others". Darvel is situated on the A71 road that ranges from Irvine on the west coast to Edinburgh on the eastern. The community is 9 miles (14 kilometres) east of Kilmarnock and also is one of the most eastern of the Valley Towns, the others being Galston and Newmilns. The town was additionally once related to Stonehouse (via Strathaven) by the Caledonian Railway. Nevertheless, the line was nearby the LMS prior to the 2nd World War. The previous Glasgow as well as South Western Train branch line to Kilmarnock survived for much longer and was closed in 1964 as part of the Beeching Axe. Much of the route of both the old railway lines is still around, although the rails have actually long since gone and several roadway bridges have been eliminated. There was a huge viaduct to the east of the community, in the lea of Loudoun Hill, which lugged the railway line over the valley. This was nonetheless, knocked down in 1986, and also only the piers stay. The River Irvine flows with the town and once powered local mills.
