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R-22, also known as Freon®, is a common refrigerant used in air conditioners. In 2010, the EPA banned the production of any new HVAC systems that use R-22 because of its harmful impact on the environment. As of January 1, 2020, the EPA banned the manufacturing or importing of R-22. All American Standard air conditioners manufactured after 2010 use R-410A.

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