If the uneven temperature persists after doing these two first things, then there is a problem that needs to be fixed.
Choosing a suitable air conditioning unit for your home is no easy work. You have to struggle because it can be a big mess when you make a slight mistake. It is possible to end up with a unit that does not work for your house since it is too small or too large. Rather than deal with the cost of replacing the unit or deal with the high energy monthly bills because you made a wrong move, take your time to choose a unit. Unfortunately, especially when one fails to work with an experienced HVAC technician, such mishaps happen. Even when the energy bills are not affected, or the size is correct, sometimes one can choose a unit that is not perfect, thus causing uneven cooling in the house. Unless you have the funds to replace or upgrade to a better unit, it is best to find a quick solution to this problem. Start by using the air vents to control and redirect the air. You must look around and see if there are any blocked or dirty vents to clean. Ensure that vents are always clean and unclogged, as this promotes better airflow and minimizes the chances of unnecessary strain on your HVAC system. It is also essential that you switch the fan from auto to on. If the uneven temperature persists after doing these two first things, then there is a problem that needs to be fixed. Your unit may have an air leak that you are unaware of. Bring an HVAC repair assistant to look at it. The HVAC serviceman will check the air ducts for any leaks and fix them. You can also consider insulating the attic to prevent any heat from escaping.