EU lawmakers in January 2006 struck an agreement on a proposal to cut down emissions of fluorinated gases as part of the Kyoto protocol on climate change. F-gases are widely used in refrigeration and air conditioning but have a high global warming potential and can sometimes stay in the atmosphere for thousands of years. The agreement mainly seeks to improve the containment and recovery of F-gases and imposes regular checks on industrial refrigeration installations. After much discussion, the compromise allows countries like Denmark and Austria to maintain stricter controls than elsewhere in Europe until 2012. A phase-out of HFC-134a in car air conditioning has also been approved as of 2011 with a complete ban applying from 2017.