goodman split a/c

06-30-2010, 02:28 AM	#1
Jacques Member   Join Date: Jul 2008 Location: phila. Posts: 504	goodman split a/c as a 'rule of thumb' what back pressure would you see on a 18000 btu condensing unit R-22 type if it was working ok in cooling mode...Thnx's

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06-30-2010, 06:48 AM	#2
COLDIRON Member   Join Date: Mar 2010 Location: PENNSYLVANIA Posts: 1,902	goodman split a/c To many variables to put a pressure on it depend a lot with the temperature outside and the temperature inside, the fan speed, how clean the coils are, and many other things. But on a hot 90degree day an average back pressure should probably run about 68LBS. Please don't hold me to it like I said to many variables.