Quote:
Originally Posted by ICanHas
One of the problems that popped up in this thread is the difficulty in verifying the supposed efficiency gain commonly associated with the use of R-290.
Use of R-290 has essentially the same effect as say putting a 2-ton compressor in a 3-ton system. THERE'S LOSS OF CAPACITY associated with using propane. If you get an old 4-ton 10 SEER unit and replace the compressor with the one taken from another 10 SEER 2-ton, you'll get improvement in efficiency, but a reduction in capacity as well.
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I do believe that you have found the proper answer to your own dilemma.
Unfortunately, your habit of confusing capacity with efficiency has hidden your discovery of the answer.
Perhaps it would be clarifying for everyone if you would state in clear language what your definition of efficiency is?
-AC