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Old 05-31-2011, 01:41 PM   #1
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Hot upstairs..need some advice


I am in the northern Virginia area and the past few days the temps has been 90-93 degrees.

The upstairs has its own A/C unit which is a Trane XR13 (3 years old) with a York Air handler that sits in the attic. All the airducts go through the attic to the 4 bedrooms.

During the late afternoon/early evening hours the temp of the air blowing out of my air vents is around 70-72 which is making it very warm upstairs. I keep the thermostat around 75 and at 4pm the temp upstairs is reaching 78 with the AC running all the time.

I checked the temp coming out of the vents at 10pm and the temp was 58-60 and finally cooling down the upstairs rooms. The air ducts are the insulated air ducts.

2 years ago I added about 6-7" of blown in attic insulation which hasn't made a bit of difference.

Anyone ran into this problem and able to fix this issue? Any suggestions would be appreciated.

Ash

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Old 05-31-2011, 01:49 PM   #2
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Hot upstairs..need some advice


Pulling hot air into the duct would be the first thought, second would be improper amount of insulation in the attic. Bad thing about placing a air handler in the attic, is you are seeing it first hand.

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Old 05-31-2011, 05:47 PM   #3
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Hot upstairs..need some advice


One way to check for return leaks in the attic is measure the return air temp at registers and again right at the air handler. If the temp rises more then a degree or two then it's sucking in hot attic air.
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Old 05-31-2011, 06:07 PM   #4
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Hot upstairs..need some advice


lowering the temp in the attic would help also. do you have plenty of ventilation in the attic? ridge vents? plenty of soffit vents or even a fan to pull the hot air out and cooler air into the attic? and is the ductwork insulated?
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Old 05-31-2011, 07:25 PM   #5
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Hot upstairs..need some advice


Quote:
Originally Posted by ashman View Post
I am in the northern Virginia area and the past few days the temps has been 90-93 degrees.

The upstairs has its own A/C unit which is a Trane XR13 (3 years old) with a York Air handler that sits in the attic. All the airducts go through the attic to the 4 bedrooms.

During the late afternoon/early evening hours the temp of the air blowing out of my air vents is around 70-72 which is making it very warm upstairs. I keep the thermostat around 75 and at 4pm the temp upstairs is reaching 78 with the AC running all the time.

I checked the temp coming out of the vents at 10pm and the temp was 58-60 and finally cooling down the upstairs rooms. The air ducts are the insulated air ducts.

2 years ago I added about 6-7" of blown in attic insulation which hasn't made a bit of difference.

Anyone ran into this problem and able to fix this issue? Any suggestions would be appreciated.

Ash
1.Rinse off the coil with the water hose. 2. Replace the air filter. After all these it should work if not then unit is out of freon.
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Old 05-31-2011, 07:38 PM   #6
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Hot upstairs..need some advice


Quote:
Originally Posted by dallastxtech View Post
1.Rinse off the coil with the water hose. 2. Replace the air filter. After all these it should work if not then unit is out of freon.
No real thought in that. No way of knowing that is the problem, because it has already been stated above what the problem is, not a maintenance issue.
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Old 05-31-2011, 08:06 PM   #7
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Ok if you say so

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