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Do all heat pump systems use Freon-22 or is there an environmentally friendly alternative?
There is a company called Enviro-safe that makes a replacement called es-22a. I cannot vouch for it's effectiveness since I haven't tried it. It is also marketed by different companies and can be found on Ebay. It is advertised as compatible with R-22 and R-22 systems, including oils, compressors, etc.
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Because geothermal systems work with nature, not against it, they minimize the threats of acid rain, air pollution and the greenhouse effect. An environmentally friendly fluid is used in the closed, continuous loop.
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