Re: Re: Re: Air Conditioning Questions--!!

Posted by Joe (Wa) on May 18, 2001 at 01:10:53 from (198.133.237.130):

In Reply to: Re: Re: Air Conditioning Questions--!! posted by Raye on May 17, 2001 at 14:20:22:

Hi Raye, Virgin R-11,12,22,502 and lesser used discontinued refrigerants sell for $10-40/lb. Severe ozone depletion is the debatable reason these refrigerants are no longer manufactured. The reality is that Dupont (freeon) and other large gas manufacturers can sell you a replacement gas (principally 134a,506,509)that are 60-80% as efficient as the above. In addition, all the new refrigerants are compatible only with ester based oil vice mineral, so you’re looking at an expensive flush to convert if it is even possible. The last ship that I was c/engr on was built new in 1995 (R-12/22 mfr was discontinued in 1992) and I converted the system to 134a in 1997. In addition to the cost of flush, testing and recharge the reclaimed 1000# R-22 plus 2000# reserve was turned over to the shipyard for disposal. Consider the billions of lbs of refrigerants carried in USN and civilian ships alone. This is one of the biggest govt/mfr rip-off's ever. To buy, sell or repair with the former refrigerants you are reqd to be EPA certified as/or under the supervision of a "Universal technician" as required by 40 CFR part 82, subpart F.

Retired but still seeing red , Joe

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