The Perfect Refrigerant 10 Planet (Environment) - zero ODP - low GWP - energy efficient - low toxicity - unstable (short atmospheric life) Prosperity (Economic) - low cost - high performance - energy efficient - safe - stable - wide material compatibility - low cost equipment - low GWP People (Society) - safe o non-flammable o low pressure o distinctive colour or smell - low toxicity - energy efficient - low cost equipment