A new energy efficient law goes into affect on January 1st of 2010. Air conditioning manufacturers will be required to produce only air conditioning units that use a new R-410A Freon. The existing R-22 Freon will be phased out and by 2020, will be discontinued completely.
Here is the hiccup…units using R-410A Freon will not be compatible with units presently using R-22 because R-410A requires wider piping. After 2020, anytime a unit needs new freon, if it is not compatible with the R-410A freon, it will have to be replaced, along with any lines in walls.
Starting next year, air conditioning repairs might start getting expensive…2020, it will be guaranteed.
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