Ok it has been bothering me recently that my sister in laws room is not cooling like the rest of the house so i decided to check the ductwork today.
I noticed for my supply i have four 10in. ducts 3 of which go somewhere and 1 goes to a junction box with four 8 in. ducts servicing wherever they go.
On my Return side i have three 10in. returns 1 of which has a junction box with three 8in. ducts going where they go.
My sister in laws room seems to be the ductwork on supply with the four 8in ducts serviced by one 10in duct.
Is it just me or is there suppose to be 2 10in. ducts servicing the 8in. ducts on the supply side?
The compressor outside is a 4 ton compressor.