I purchased a house recently that had a whole new HVAC system when the addition was built. The issue I am having is the room that was installed is very HOT all the time. Winter was fine. I have added thick dark curtains and my yard is very shaded.

I was told by a friend that the room should have a return vent. The room currently has two vents and it 19x21. Do I need a return vent? I would think when the system was installed and the room built that they would have put it in at that point.

advice needed.

Thanks

Love to tell you to simply add a return, but I rather doubt that would settle the issue for you. Can you provide a little more information?
Window sizes and orientation (north, south, east,or west) Insulation values of the ceiling,walls. Ceiling height. Also is there any seperation between the addition and the main house? I have feeling that the only long term solution for you is to zone the house.
Yes you can do this with forced air systems and it works very nicely.

Are you saying the room that the HVAC unit was installed in is very hot? What type of system do you have?

The room has 10 foot ceilings.

The walls and ceiling are r19 insulated with a vapor barrier.

All the windows in the room are 3'x5' and there are 8 of them along with a 75" wide sliding door and a 32" door.

If you can imagine the room is a box and the opening from the main house to the addition is 48" the right is the sliding door and the to the left is the 32" door. The rest of the room is windows.

I have 2 LARGE maple trees that shade the room most of the day.

The room faces south southeast.

The house itself is a modular home that has a basement. The HVAC system that was installed is a Goodman (i hear they are bad) the rest of the house stays cool when the AC is on but the addition is unusually hot. Lets say the house reads thermostate reads 75 the addition will be around 80-82 degrees.

Actually just sounds like your system needs balancing to me, something that the heating contractor should have done on installation.

I'm only guessing, but it sounds like your addition has exposure to the weather that is not consistant with the balance of your home. This would lead me to believe zoning will be your best solution. I strongly suggest you find a hvac contractor in your area (perhaps one different from the one that replaced your system) and have the entire system, more specifically your duct system evaluated. If you had new equipment installed and it was increased in size to handle the now larger load, then the duct system; both supply and return side needed to be revised to handle the increased volume of air.
Best Wishes!

Is this instant reply or what? I've never used this before. But I find it interesting. Imyself I'm a Contractor/Remodeler by trade.But I don't know everything.

Never mind, I just noticed the dates on the replys.Dumd ASS.