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Central air running all day and not cooling very well

I live in a second floor condo built in 2003. My ac compressor was replaced about 2 years ago because it was ''struck by lightning''. Basically my problem is my air is constantly running and there is alot of condensation run off on the outside compressor unit. There is cold air blowing but it takes a while to cool down. I had the coil cleaned and the refigerant checked and all is well. I just have no idea why this unit is always running and it takes so long to cool down the house. Do you have any suggestions?

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  • shoreshotfl Jul 13, 2009

    I will look inot this, I am also going to go into the attic and look at the vent to see if they are crimped.I guess my biggest problem is that it takes hours for the unit to cool the place 1 degree. Thanks again for your help!! On a side note the compressor has condensation all over it and it saturates the concrete pad it is mounted on.

  • shoreshotfl Jul 13, 2009

    i did just have the coils clean about 3 weeks difference. They also checked the refrigerant and said the level was fine. He did say something about a pipe where the gas reaches the handler and there is a Y split and sometimes something can get stuck in there but they want to drain the system and take it there anyway to deep clean the indoor coils? Thanks again for all of your help!!


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Condensation by the compressor is okay, but if you see it icing up thats reason for concern. The indoor coils can freeze up if there is not enough air flow. Make sure most if not all the registers are open. Take tempature readings at the return and at a supply vent. There should be a 20-28 degree difference. If the difference is only in the teens you have a functional problem. Be sure to shade direct sunlight. And if it gets below 65 degrees at night be aware that if the A\C runs through the night it may block up with ice in the evaporative area. If outside temp reaches 100 degrees unit will run all day. Good luck

Posted on Jul 13, 2009

  • Lewis Luker
    Lewis Luker Jul 13, 2009

    Excessive moisture may mean that your compressor is pumping refrigerant while in a liquid state instead of gas, it may have too much refrigerant or the indoor coils may be chocked full of dirt. That differential test is a good indicator of proper function.

  • Lewis Luker
    Lewis Luker Jul 13, 2009

    When you had the compressor replaced, they should have installed a new filter drier to catch any contaminants from the inside of the tubing. As for the outside of the indoor coils, a good commercial cleaner foams out dirt by way of a mild acid, Most Techs don't even check the indoor coils because they are much harder to access and clean. One last thing is if the compressor installers didn't properly vacuum out the system before recharging then you system might rot from the inside due to a acid build up.


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