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Old 05-24-2010, 06:34 PM   #1
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superheat


I have a goodman condenser with a 20 degree superheat and a 2 degree sub-cool. is that normal when its 80 degrees outside and 59 degree wet bulb temp inside?

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Old 05-24-2010, 07:04 PM   #2
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superheat


Depends on the age and SEER rating of the unit etc. Subcooling is different on higher SEER units. Depends on the Goodman specs also. My old school generic chart says you should have around 5-7 superheat so it looks low on charge to me. Your Delta T should be low also if the charge is low.

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Last edited by yuri; 05-24-2010 at 07:13 PM.
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Old 05-24-2010, 07:22 PM   #3
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superheat


For sure it's undercharged. Subcool should around 12 with a 10-13 SEER .
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