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With a two story house you have to be aware that cold air flows downwards so any cold air coming from an ac unit will flow downstairs( normally down the stairway) so unless you can close off the down stairs then the up stairs unit will be cooling downstairs as well. Ac units have a thermostat located in the air intake and it cools until the cold air has risen to that point. In effect the space above the ac unit will be hotter than the floor. Knowing how they work ,you can see that the upstairs unit will never reach the set temperature because the cold air is continually heating from the house and will never get to the top thermostat.
So your solutions are
1-- fit controls that restrict the cold air from leaving the upper floor (Doors)
2--don't run the upper ac unit unless you are living up there (waste of money
)3 place an ac in each upper room and keep the room door closed
Sometimes it is difficult to keep your home cool in the hot summer months. Also, some areas of your home may still be hot where other areas are too cool. Try this method to keep your home cool evenly throughout. Before you get started make sure your furnace filter is new. This will allow for maximum air flow.
If your living space is a single floor plan:
Turn the air conditioning on
Switch the furnace fan from auto to on.
Measure the temperature in each room.
Close the vents by about half in the cooler rooms
This will force more cool air into the warmer rooms.
Keep adjusting the vents until all the rooms have the same temp.
If your living space is on more than one level:
Turn on the air conditioning.
Switch the furnace fan from auto to on.
On the lowest level of the house close half of the vents that are the closest to the stairs.
This will force more cool air to the top floor where it is usually hotter.
Cool air will sink from the upper floors which will keep the area near the stairs cool.
Measure the temperature in all the rooms.
Keep adjusting the vents until you have a nice even temperature throughout the house.
I found that leaving the furnace fan on all the time will keep your home evenly cool and comfortable. You may have to replace your furnace filter once a month due to the increased air flow. It will be well worth it in a cooler, more comfortable, and more energy efficient home.
Aside
from temperature, humidity is a major concern.
The low humidity levels can cause the cork to dry/shrink allowing room
for both air and other food odors to enter the bottle and tamper with the
quality of the wine inside. Wine coolers
offer an optimal humidity level of 50-80% needed to keep your wine in good
condition.
I lost you at my the end but the 2 ton unit should be able to cool 960 sqft. Sounds like a refrigerant problem. Air conditioners should cool the air 15 to 20 degrees. This means 80 degrees going into the machine in the return should be 60 to 65 degrees coming out in the supply. If you are in that range than it's likely never going to cool the space.
It may simply be a case that the air intake filter needs cleaning, as do the condenser coils. This is recommended maintenance, prior to using the dehumidifier for the first time each season. Also, the air temperature at floor level, may be to cool for it operate properly. Particularly, if it's below 60 degrees. the unit up off the floor and placing it on something sturdy, will help solve that issue.
After cleaning the unit, as stated above, try placing it upstairs where the temperature will be warmer and allow it to run at it's lowest humidity extraction level. That's usually 35%. If it functions properly upstairs, then you will know that it's an air temperature issue in the basement.
Hope this helped you troubleshoot and solve the problem.
The air conditioner needs to be "tilted" or "pitched" to the rear. By this I mean the back (outside) should be slightly lower than the front (inside). This will allow the water to run toward the back of the unit, and drip on the ground instead of inside the house - on the floor. The A/C unit must not be level or tilted into the room (front even with or lower than the rear).
This water is the result of condensation that is created when the warm room air is drawn through the much cooler coil & fins inside the unit and is completely normal. The more humid the air inside is, the more condensation will form, and drain away.
What you are describing is the Heat Anticipator. It is a small resistor that helps the thermostat from overshooting the set temperature by heating up and shutting off the thermostat just before your set temperature. I don't think that is related to your over heat. 14 degrees is a lot and the Heat Anticipator will only effect it 4 or 5 degrees. I would remove the thermostat and check if there is a call for heat. If so, you have a shorted wire. If not, replace the thermostat.
Warm air rises and if the upstairs thermostat is on it will onerride to lower the temp upstairs. To have the dowstairs thermostat govern, the up stairs must be off . The whole house will balance to the controlling thermostat.
A good heating guy should be able to balance your dampers to increase the airflow upstairs. Keep in mind heat rises. 2nd floors are the hardest to cool. You may need to add more returns to pull the heat down the the evaporator so it can be cooled. If you are lucky you may be able to adjust your blower up to a higher speed. You may have to even add some more supply airs. Check with your local building inspector. He may be able to give you a list of contractors in your area that would be good for this type of problem. Good luck>>>
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