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.
"Cut it twice and it is still too short".
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Last edited by yuri; 05-24-2010 at 07:13 PM.