So my bedroom is extremely hot all year round no matter if its winter or summer, it gets so warm that i start to sweat and i can't figure out what it is.

Right now its summer here and the AC is on all the other rooms stay nice and cool my room always is hot, in the winter i actually have to close the ducts because its gets so warm. Once you enter my room you get a burst of hot air and can quickly tell its hotter then all other rooms. If i leave my room i can for sure feel its cooler outside. My bedroom is in the middle of the house so it not the sun, and the rooms that are facing the sun are still cooler then my room.

The air flow from the duct seems fine, so i don't know what could be causing it. I would think insulation but its hot in the winter so it has to be something else.

The only thing i can think of is, all 3 other bedrooms have a cold air return and mine does not so all the warm air is getting trapped in my room.

Any input?