Question about Ruud UAKA030 Air Conditioner

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Cooling problems I just purchased a 5 yr old home. It had one previous owner who lived there untill just recently. It appears my RUUD air conditioner isnt cooling correctly. When it is cool outside (70 degrees), the unit shoots out nice COLD air, but when its hot outside (85-90 degrees), it blows cool air 78 degrees is the coldest. I had a handy man my parents know come by and look at the unit. He cleaned the coils, checked the freon levels, hooked-up this mechanism to make sure the unit was operating properly. But he couldn't come to a solution. So what could it be? Also note, my next door neighbor has the exact same unit and same size home, but her home cools just fine.

Posted by octavia beckingham on


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Inside coil could be undersized. Have a tech check inside coil rating. Sometimes people only change out what they perceive to be bad. Its best to change inside coil nad condenser at the same time

Posted on Jun 23, 2008



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Check the filters inside and the evap coil to make sure it isnt filthy. The evap coil can be cleaned with a credit card if its wet. The large line outside should sweat all the way to the compressor if its got enough freon. Will freeze when its cool outside or not sweat at all if its low. Good luck with it.

Posted on Jul 30, 2007

  • Anonymous Jul 30, 2007

    There are live experts on here a lot of times if you cant find the problem.

  • Anonymous Aug 17, 2007

    Hi Again, The same two refrigerant lines that left the outside unit will be going to the evaporator coil on the inside. There will also be a drain line leaving the pan under the evap coil going to a drain or back outside to drain condensate water. The evap coil may not be very easy to get to depending a lot on the location of the unit, what the conecting ducts are made of and how easy the guy that put it in wanted it to be. Some symtoms of a dirty evap coil are reduced air flow, Low suction pressure, frozen evap and suction lines. The side that will need cleaned will be the one where the air goes into it. If it is dirty it will have like a blanket of fuzz covering it on that one side. It will be wet if the unit has been running and can usually be cleaned with a credit card by scraping it off along with the fins. You will have to get to it though which will involve getting into it inside the duct work or between the furnace and the evap coil. You might want to check with your neighbor and find out who they use to service their AC. A good AC man can tell a lot about the unit by the pressures, the airflow and the sweat back on the suction line. A bad one will overcharge one with a dirty evap coil and cause the compressor valves to go bad. A good AC man may be expensive but if you think about the price of a new compressor or condensing unit and the price of electricity of trying to run an ineficiant unit. The good AC mans prices arent that bad. Ask around to find a reputable man or company. I see that they also have repair serviceman finders on here. Hope I have helped.



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