We have an almost square house. Toward the garage are 2 bedrooms, 1 bath and laundry room. They are probably 15 degrees colder when the A/C is on. Meanwhile, the master bed and bath and the kitchen and living room are very warm. Help, we have tried closing vents, (still cold) stuffing towels in the vents to partially block...nothing seems to work. The house is 10 yrs old.