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 - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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