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Building Science
EPA Warns Against Unapproved Refrigerants in Air Conditioners

Cowboys in the HVAC industry have found another way to get around the R-22 phase-out
Green Building News
Getting a Grip on a Refrigerant Phase-Out

EPA rules will require that ozone-friendly refrigerant be used in new HVAC equipment sold after January 1, 2010. But that doesn’t mean use of ozone-depleting R-22 refrigerant will end We…

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EPA Warns Against Unapproved Refrigerants in Air Conditioners