To answer your second question, a strategy to consider is removing all of the screws. Use a sawzaw with a sharp blade to cut all of the exterior loops. These are #2. Using a sharp blades allows the removal of the metal end caps with a hammer. Sometimes they are aluminum and do not need to be removed. The sawzaw can make easy work of the copper tubing as well. All of the metal can be sprinkled in with your prepared instead of selling it as tin or worse yet as appliance metal. Just an idea.
I only do 40-50 per year, but I sprinkle in the condensers in with my HMS to get top dollar. Some will break down the condenser, but it is nor worth my time with the current prices.
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