R-22 is a type of refrigerant that has been commonly used in air conditioners and heat pumps for years. Unfortunately, it contains hydrochlorofluorocarbons (HCFCs) that deplete the ozone layer and contribute to global warming. In order to comply with the Montreal protocol, the EPA has deemed that production and consumption of R-22 must be gradually diminished and, eventually, ceased by the year 2020.
Cons: Equipment that is compatible with different refrigerant doesn’t mix. That means that if you replace your outdoor condensing unit with an R-410A compatible unit, you will also have to replace your indoor coil and lineset as well.
R-410A is more sensitive to proper charging than R-22. However, this does not mean that R-410A equipment is any less reliable than R-22 compatible units.
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