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if you have it set at 60 F and it is working at 65 to 68 F then that would be about right
as the air is cooled the cold air falls to the floor and out under the door, open window or anywhere else it can escape
the unit has to be at 80% room height so if it is set in a window then when the cold air gets up to the thermostat or ac level in the window then it will stop cooling
So if the ac unit is say 4ft from the floor and the ceiling height is 8 ft then the ac will only cool the bottom 4 ft
cold air does not rise but falls down
if you are using a ceiling fan then the cold air is stirred up and the 65F sounds about right
remember that the setting temp ( what you set it at) is the lowest temp that it will go down to before it stops cooling and if that is not reached it will keep working to attain that temp and if the room is too big, air leaks under door . around the fit in the window , no insulated walls , hot exterior wall,etc then maybe 65 F is the best you will get
Lets look at the output of the system first. Take your square footage of the area you are trying to condition and times it by 15. We try to get 15 Btu's per square foot of air conditioning. If your area is say 10 by 15, you have 150 square feet; times it by 15 = 2250 Btu unit is required. If you have a 5,000 Btu unit, it should be more than enough to cool the room. If this is correct, the problem may be because you have the unit set for Dry. In Dry mode, the compressor will cycle less frequently than if on Cool. If in fact the unit is on Cool, you may need to lower the temperature setting to fool the sensor from turning off the compressor prematurly. If you still can't cool the area, your unit has an issue with either refrigeration or air circulation and will need to be serviced.
Lowering the temperature setting doesn't change the temperature of the air coming out of the unit it just lets it run until the room temperature gets colder. Check the temp of the air coming out of the unit. If it isn't as cold as it used to be the charge could be low. First though you should make sure the filters are clean and the coils.You should also check the actual room temp. It's also possible the unit doesn't have enough capacity to keep up with the cooling load of the room.
The 'dry' setting is a feature which allows you to use the air conditioner as a dehumidifier. It works by cooling the radiator enough for it to attract condensation (mosture from the rooms air) which then drains into a tank or an external hose which dries the room. Even when used in cooling mode the unit will dehumidfy too, but because the fan is on it will be less effective. Also when the unit is in cooling mode it stops the compressor (cooling motor) when it reaches the selected rom temperature, however the dry function overides this and is a more effective dehumidifier as it will work in small spaces too. Hope this helps.
Setting temps on a Wall unit or a window unit - depends on where the Unit is in the room ( area), the stat in the unit is reacting to the the return air ( at the Unit) . If the Unit is not large /small enough then you will have a problem - 1. To Cold near the Unit and to warm the further away you are from it.
2. If the Unit is facing a wall to close, the unit can short cycle ( entire room will be warm). Dedending on the room and heat load - check and see if the Unit is the proper size. " to much of a good thing " is bad - not enough maybe to ( not cooling the area properly). #3 Control is defected ( age of Unit ? )
was not given.
Make sure your vent is closed. check the filter to see if its clean. If you run the a/c you can check your evaporator to see if you have condensation or does it freeze up?
Make sure you have your unit on early in the morning. If you turn it on in the afternoon the humidity might be too much and it will take along time to cool down.
Try those things if that doesnt work then you need a service call.
If the air doesn't seem cool enough it is necessary to use a thermometer to check the difference in temperature between the air going into the unit and the air being blown into the room. Ideally, the temperature difference should be more than 15 degrees. For example, if the temperature going into the air conditioner is 80 degrees, the temperature coming out of the unit should be at least 65 degrees or less. If the difference is 15 degrees or more there is probably no cause for concern. If the temperature difference is less than 15 degrees you should check the following:
Check to make sure the air damper is closed. If it's open, it will bring in outside air and reduce the efficiency of the unit.
An 11'500 btu Is appr. 1 ton of cooling capacity or enough to cool approximatly 450 sq ft of floor area. Be sure to read the instructions of course and be sure that all the packaging material was removed that may be restricting airflow. On high you should be able to easily feel the air blowing 10-15 ft from the unit and the air should be dropping about 15- 20 degrees when it exits the unit. So if the room temperature is 85 degrees the air exiting the unit should be around 65 -70. The amount of time it takes to cool the entire room depends on how big the room is and how much and the intensity of the heat infiltrating the room and the number and heat output of appliances and people in the room. Hope this helps you out GL!