11:03AM | 07/16/03
Member Since: 07/15/03
1 lifetime posts
I have two systems in my house. Downstairs is a package unit of two tons cooling cap. the upstairs is the same, but a split systems. Both are 12 seer rudd units. The downstairs return air temp is 71F and the air vents read 49-50f, which is great. The upstrairs return air vents reads 71F, but the air vents read 61F. Outside temp. is 90F. The upstrairs air cools down 3-5 degrees lower at night and when it is cooler outside. Could I have a leak in the return air duct which is pulling really hot attic air in and trying to cool it. Both units are 1 1/2 years old. I thought they should work about the same. Also how much insulation should be on the main truck line in the attic for the upstairs unit. The truck in a sheet metal trunk, with a thin layer of insulation wrapped around it? Please help someone, spent alot to have a better house and it seems like money wasted upstairs.


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