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My system is R22 based. I stuck with R22 to reduce installation costs. The cost vs. reward on just replacing the condensors was quite good. Going to a moderaely more efficient (15-16 SEER), requiring changing the coolant, the condensor and the evaporator would have been about double. Going to a high efficiency (18+ SEER) would have been 4 times the cost. The very small extra savings would have taken a very long time to payoff.
These are standard copper coil with aluminum fin condensors. I did buy the best model, RHEEM, in the class. They have both more cooling surface area and better protection for the coils/fins.
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James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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