As one who has worked in the refrigeration (Auto, Home and commercial) business for more than 30 years I have read all the regs etc., and this is what is most important. All 12 systems can be converted by using 134a, 512 or other exotic mixtures. All refrigerators were 12 for many years.Home AC's use 22. I converted thousands of systems for soft drink companies. Here is where you get in a bind. You are required to evacuate all systems into receivers not simply blow it into the atmosphere. You need a certificate to purchase all refrigerants except 134a. Some wholesale distributors will require a certificate to purchase any large amountod any even 134a (CYA) I wouldnt worry too much if no one is around to see. Also, what about the leaking systems. I spent years in Florida where at least half the homes have swimming pools and are purified with chlorine that escapes into the atmosphere and no one had even mentioned that. It is a commonly known fact that the worst atmospheric polluter is animal flatulance ( not BS either). Also note that the average person cannot purchase an outside condenser for an AC unit as they come with 22 already in the unit. So my opinion is ---much ado about a little.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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