Obtain ASE certification in heating and AC systems.
Take it to a reputable mechanic, there are EPA laws against tampering with an AC unit without a proper license.
It requires special equipment, and legally, a license to handle refrigerants. I'm not being mean. If you are talking about a window AC, you simply can't without having brazing equipment and the skill to use it, plus about $3000 of other equipment to recycle the refrigerant. For a central unit, if you are low on freon, you have a leak, and that must be fixed. Simply adding freon to a damaged system will accomplish nothing. On cost alone, depending on how much you value AC, you are much better off having AC guys come out.
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AC means AFTER CHRIST AC is what your living in wright now.Like 2011 is AC.
AC in AC milan stands for Assosiation Calcio Milan AC in AC milan stands for Assosiation Calcio Milan
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A transformer changes the VOLTAGE of AC current (AC to AC). A rectifier changes AC to DC.